TY  - JOUR
AU  - Porobić, Slavica
AU  - Božić, Bojan Đ.
AU  - Dramićanin, Miroslav
AU  - Vitnik, Vesna
AU  - Vitnik, Željko J.
AU  - Marinović-Cincović, Milena
AU  - Mijin, Dušan Ž.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8475
AB  - A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties. © 2019
T2  - Dyes and Pigments
T1  - Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects
VL  - 175
SP  - 108139
DO  - 10.1016/j.dyepig.2019.108139
ER  - 

@article{
author = "Porobić, Slavica and Božić, Bojan Đ. and Dramićanin, Miroslav and Vitnik, Vesna and Vitnik, Željko J. and Marinović-Cincović, Milena and Mijin, Dušan Ž.",
year = "2020",
abstract = "A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties. © 2019",
journal = "Dyes and Pigments",
title = "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects",
volume = "175",
pages = "108139",
doi = "10.1016/j.dyepig.2019.108139"
}

Porobić, S., Božić, B. Đ., Dramićanin, M., Vitnik, V., Vitnik, Ž. J., Marinović-Cincović, M.,& Mijin, D. Ž.. (2020). Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments, 175, 108139.
https://doi.org/10.1016/j.dyepig.2019.108139

Porobić S, Božić BĐ, Dramićanin M, Vitnik V, Vitnik ŽJ, Marinović-Cincović M, Mijin DŽ. Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments. 2020;175:108139.
doi:10.1016/j.dyepig.2019.108139 .

Porobić, Slavica, Božić, Bojan Đ., Dramićanin, Miroslav, Vitnik, Vesna, Vitnik, Željko J., Marinović-Cincović, Milena, Mijin, Dušan Ž., "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects" in Dyes and Pigments, 175 (2020):108139,
https://doi.org/10.1016/j.dyepig.2019.108139 . .

TY  - JOUR
AU  - Janković, Marija M.
AU  - Janković, Bojan Ž.
AU  - Marinović-Cincović, Milena
AU  - Porobić, Slavica
AU  - Krneta-Nikolić, Jelena D.
AU  - Sarap, Nataša
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8905
AB  - Simultaneous thermal analysis (TG–DTA) of low-rank coals from different annual periods (2015 and 2018) which originate from Kolubara and Nikola Tesla A (TENT A) coal-fired power plants was studied to identify their combustion characteristics and self-ignition risks. In order to investigate kinetics of thermo-oxidative degradation, model-free models including the Friedman and Kissinger–Akahira–Sunose methods were applied. In accordance with obtained kinetic results, numerical optimization of combustion process was implemented. Homogeneous and heterogeneous types of ignition were identified for the tested coals, and factors that affect their occurrence are the used heating rate and volatile matter content. From thermal susceptibility graph, it was found that the tested coals expand in a wide range of self-ignition risk, depending on their coal rank. The youngest coal (TENT A (2018)) has the largest propensity to self-ignite among high-ranking coals. It was found that less tendency of 2018 coals to show true isokinetic temperature in comparison with 2015 coals is a consequence of intraparticle diffusion limitations, and change of char properties, at higher conversion values. Gamma spectrometry analysis of coals showed that higher concentration of 40K radionuclide (which is in mineral composition) may contribute through its deposition on available sites, decreasing surface area for reaction with oxidizing species. © 2020, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization
VL  - 142
IS  - 2
SP  - 547
EP  - 564
DO  - 10.1007/s10973-020-09288-5
ER  - 

@article{
author = "Janković, Marija M. and Janković, Bojan Ž. and Marinović-Cincović, Milena and Porobić, Slavica and Krneta-Nikolić, Jelena D. and Sarap, Nataša",
year = "2020",
abstract = "Simultaneous thermal analysis (TG–DTA) of low-rank coals from different annual periods (2015 and 2018) which originate from Kolubara and Nikola Tesla A (TENT A) coal-fired power plants was studied to identify their combustion characteristics and self-ignition risks. In order to investigate kinetics of thermo-oxidative degradation, model-free models including the Friedman and Kissinger–Akahira–Sunose methods were applied. In accordance with obtained kinetic results, numerical optimization of combustion process was implemented. Homogeneous and heterogeneous types of ignition were identified for the tested coals, and factors that affect their occurrence are the used heating rate and volatile matter content. From thermal susceptibility graph, it was found that the tested coals expand in a wide range of self-ignition risk, depending on their coal rank. The youngest coal (TENT A (2018)) has the largest propensity to self-ignite among high-ranking coals. It was found that less tendency of 2018 coals to show true isokinetic temperature in comparison with 2015 coals is a consequence of intraparticle diffusion limitations, and change of char properties, at higher conversion values. Gamma spectrometry analysis of coals showed that higher concentration of 40K radionuclide (which is in mineral composition) may contribute through its deposition on available sites, decreasing surface area for reaction with oxidizing species. © 2020, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization",
volume = "142",
number = "2",
pages = "547-564",
doi = "10.1007/s10973-020-09288-5"
}

Janković, M. M., Janković, B. Ž., Marinović-Cincović, M., Porobić, S., Krneta-Nikolić, J. D.,& Sarap, N.. (2020). Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization. in Journal of Thermal Analysis and Calorimetry, 142(2), 547-564.
https://doi.org/10.1007/s10973-020-09288-5

Janković MM, Janković BŽ, Marinović-Cincović M, Porobić S, Krneta-Nikolić JD, Sarap N. Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization. in Journal of Thermal Analysis and Calorimetry. 2020;142(2):547-564.
doi:10.1007/s10973-020-09288-5 .

Janković, Marija M., Janković, Bojan Ž., Marinović-Cincović, Milena, Porobić, Slavica, Krneta-Nikolić, Jelena D., Sarap, Nataša, "Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):547-564,
https://doi.org/10.1007/s10973-020-09288-5 . .

TY  - JOUR
AU  - Manić, Nebojša
AU  - Janković, Bojan
AU  - Dodevski, Vladimir
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12629
AB  - Apricot kernel shells are naturally available source of biomass with potential for conversion to clean energy through a thermo-chemical process such as pyrolysis. To facilitate further process development, an advanced mathematical model which represents the process kinetics is developed and validated on the thermal decomposition studies using simultaneous thermal analysis, over a temperature range of 30-900 °C, at four heating rates of 5, 10, 15 and 20 °C min−1, under argon atmosphere. Model-free analysis and numerically developed methods were utilized for determination of effective activation energies, pre-exponential factors and the fractional contribution. A novel approach is introduced in order to determine actual pseudo-components of studied biomass that are included in its composition. The comparative study of the obtained kinetic results was also presented. The results obtained strongly indicated that the pseudo-component reaction modelling method could be employed to predict the experimental devolatilization rate and biomass composition with a high likelihood of success.
T2  - Journal of Sustainable Development of Energy, Water and Environment Systems
T1  - Multicomponent Modelling Kinetics and Simultaneous Thermal Analysis of Apricot Kernel Shell Pyrolysis
VL  - 8
IS  - 4
SP  - 766
EP  - 787
DO  - 10.13044/j.sdewes.d7.0307
ER  - 

@article{
author = "Manić, Nebojša and Janković, Bojan and Dodevski, Vladimir and Stojiljković, Dragoslava and Jovanović, Vladimir",
year = "2020",
abstract = "Apricot kernel shells are naturally available source of biomass with potential for conversion to clean energy through a thermo-chemical process such as pyrolysis. To facilitate further process development, an advanced mathematical model which represents the process kinetics is developed and validated on the thermal decomposition studies using simultaneous thermal analysis, over a temperature range of 30-900 °C, at four heating rates of 5, 10, 15 and 20 °C min−1, under argon atmosphere. Model-free analysis and numerically developed methods were utilized for determination of effective activation energies, pre-exponential factors and the fractional contribution. A novel approach is introduced in order to determine actual pseudo-components of studied biomass that are included in its composition. The comparative study of the obtained kinetic results was also presented. The results obtained strongly indicated that the pseudo-component reaction modelling method could be employed to predict the experimental devolatilization rate and biomass composition with a high likelihood of success.",
journal = "Journal of Sustainable Development of Energy, Water and Environment Systems",
title = "Multicomponent Modelling Kinetics and Simultaneous Thermal Analysis of Apricot Kernel Shell Pyrolysis",
volume = "8",
number = "4",
pages = "766-787",
doi = "10.13044/j.sdewes.d7.0307"
}

Manić, N., Janković, B., Dodevski, V., Stojiljković, D.,& Jovanović, V.. (2020). Multicomponent Modelling Kinetics and Simultaneous Thermal Analysis of Apricot Kernel Shell Pyrolysis. in Journal of Sustainable Development of Energy, Water and Environment Systems, 8(4), 766-787.
https://doi.org/10.13044/j.sdewes.d7.0307

Manić N, Janković B, Dodevski V, Stojiljković D, Jovanović V. Multicomponent Modelling Kinetics and Simultaneous Thermal Analysis of Apricot Kernel Shell Pyrolysis. in Journal of Sustainable Development of Energy, Water and Environment Systems. 2020;8(4):766-787.
doi:10.13044/j.sdewes.d7.0307 .

Manić, Nebojša, Janković, Bojan, Dodevski, Vladimir, Stojiljković, Dragoslava, Jovanović, Vladimir, "Multicomponent Modelling Kinetics and Simultaneous Thermal Analysis of Apricot Kernel Shell Pyrolysis" in Journal of Sustainable Development of Energy, Water and Environment Systems, 8, no. 4 (2020):766-787,
https://doi.org/10.13044/j.sdewes.d7.0307 . .

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Radović, Ivana M.
AU  - Stojmenović, Marija
AU  - Čebela, Maria
AU  - Nikolić, Željka
AU  - Pagnacco, Maja C.
AU  - Panić, Ivan
AU  - Stanković, Miroslav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8900
AB  - In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO 2 molecules, while the micropores are the most suitable for trapping of CO 2 . The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO 2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.
T2  - Energy and Environment
T1  - Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds
VL  - 31
IS  - 4
SP  - 583
EP  - 612
DO  - 10.1177/0958305X19880878
ER  - 

@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Radović, Ivana M. and Stojmenović, Marija and Čebela, Maria and Nikolić, Željka and Pagnacco, Maja C. and Panić, Ivan and Stanković, Miroslav",
year = "2020",
abstract = "In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO 2 molecules, while the micropores are the most suitable for trapping of CO 2 . The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO 2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.",
journal = "Energy and Environment",
title = "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds",
volume = "31",
number = "4",
pages = "583-612",
doi = "10.1177/0958305X19880878"
}

Dodevski, V., Janković, B. Ž., Radović, I. M., Stojmenović, M., Čebela, M., Nikolić, Ž., Pagnacco, M. C., Panić, I.,& Stanković, M.. (2020). Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy and Environment, 31(4), 583-612.
https://doi.org/10.1177/0958305X19880878

Dodevski V, Janković BŽ, Radović IM, Stojmenović M, Čebela M, Nikolić Ž, Pagnacco MC, Panić I, Stanković M. Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy and Environment. 2020;31(4):583-612.
doi:10.1177/0958305X19880878 .

Dodevski, Vladimir, Janković, Bojan Ž., Radović, Ivana M., Stojmenović, Marija, Čebela, Maria, Nikolić, Željka, Pagnacco, Maja C., Panić, Ivan, Stanković, Miroslav, "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds" in Energy and Environment, 31, no. 4 (2020):583-612,
https://doi.org/10.1177/0958305X19880878 . .

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Mirković, Miljana M.
AU  - Kragović, Milan M.
AU  - Radović, Ivana M.
AU  - Veljković, Filip M.
AU  - Stojmenović, Marija
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8922
AB  - Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.
T2  - Thermal Science
T1  - Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application
VL  - 24
IS  - 6 (Part A)
SP  - 3807
EP  - 3821
DO  - 10.2298/TSCI190913064D
ER  - 

@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Mirković, Miljana M. and Kragović, Milan M. and Radović, Ivana M. and Veljković, Filip M. and Stojmenović, Marija",
year = "2020",
abstract = "Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.",
journal = "Thermal Science",
title = "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application",
volume = "24",
number = "6 (Part A)",
pages = "3807-3821",
doi = "10.2298/TSCI190913064D"
}

Dodevski, V., Janković, B. Ž., Mirković, M. M., Kragović, M. M., Radović, I. M., Veljković, F. M.,& Stojmenović, M.. (2020). Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science, 24(6 (Part A)), 3807-3821.
https://doi.org/10.2298/TSCI190913064D

Dodevski V, Janković BŽ, Mirković MM, Kragović MM, Radović IM, Veljković FM, Stojmenović M. Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science. 2020;24(6 (Part A)):3807-3821.
doi:10.2298/TSCI190913064D .

Dodevski, Vladimir, Janković, Bojan Ž., Mirković, Miljana M., Kragović, Milan M., Radović, Ivana M., Veljković, Filip M., Stojmenović, Marija, "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application" in Thermal Science, 24, no. 6 (Part A) (2020):3807-3821,
https://doi.org/10.2298/TSCI190913064D . .

TY  - CHAP
AU  - Pijović, Milena
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Radojević, Miloš B.
AU  - Manić, Nebojša G.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8524
AB  - Thermo-analytical characterization of selected biomasses (agricultural waste and wood biomass feedstock) through the pyrolysis process was performed under dynamic conditions. Slow pyrolysis (carbonization) regime (with a heating rate below 50 °C min−1) was selected because it favours the residual solid (bio-carbon/bio-char) in the higher yields (change in the surface area of bio-char with pyrolysis conditions was dependent on the type of biomass feedstock). Comparison of results and discussions related to obtained percentage pyro char yields from thermo-chemical conversion of biomass feedstocks were generated from simultaneous thermal analysis (STA) (TGA-DTG-DTA apparatus). The analysis of gaseous products of pyrolysis was carried out using mass spectrometry (MS) technique. Releasing of the light gaseous compounds (mainly CO, CO2, CH4, and H2 non-condensable gases) was monitored simultaneously with TGA measurements. Discussion related to this issue was performed from the aspect of the syngas production, as well as the versatility of selected biomasses in the gasification process where the various gasifying agent may be in use. © Springer Nature Switzerland AG 2020.
T2  - Lecture Notes in Networks and Systems
T1  - Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues
VL  - 90
SP  - 139
EP  - 165
DO  - 10.1007/978-3-030-30853-7_9
ER  - 

@inbook{
author = "Pijović, Milena and Janković, Bojan Ž. and Stojiljković, Dragoslava and Radojević, Miloš B. and Manić, Nebojša G.",
year = "2020",
abstract = "Thermo-analytical characterization of selected biomasses (agricultural waste and wood biomass feedstock) through the pyrolysis process was performed under dynamic conditions. Slow pyrolysis (carbonization) regime (with a heating rate below 50 °C min−1) was selected because it favours the residual solid (bio-carbon/bio-char) in the higher yields (change in the surface area of bio-char with pyrolysis conditions was dependent on the type of biomass feedstock). Comparison of results and discussions related to obtained percentage pyro char yields from thermo-chemical conversion of biomass feedstocks were generated from simultaneous thermal analysis (STA) (TGA-DTG-DTA apparatus). The analysis of gaseous products of pyrolysis was carried out using mass spectrometry (MS) technique. Releasing of the light gaseous compounds (mainly CO, CO2, CH4, and H2 non-condensable gases) was monitored simultaneously with TGA measurements. Discussion related to this issue was performed from the aspect of the syngas production, as well as the versatility of selected biomasses in the gasification process where the various gasifying agent may be in use. © Springer Nature Switzerland AG 2020.",
journal = "Lecture Notes in Networks and Systems",
booktitle = "Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues",
volume = "90",
pages = "139-165",
doi = "10.1007/978-3-030-30853-7_9"
}

Pijović, M., Janković, B. Ž., Stojiljković, D., Radojević, M. B.,& Manić, N. G.. (2020). Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues. in Lecture Notes in Networks and Systems, 90, 139-165.
https://doi.org/10.1007/978-3-030-30853-7_9

Pijović M, Janković BŽ, Stojiljković D, Radojević MB, Manić NG. Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues. in Lecture Notes in Networks and Systems. 2020;90:139-165.
doi:10.1007/978-3-030-30853-7_9 .

Pijović, Milena, Janković, Bojan Ž., Stojiljković, Dragoslava, Radojević, Miloš B., Manić, Nebojša G., "Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues" in Lecture Notes in Networks and Systems, 90 (2020):139-165,
https://doi.org/10.1007/978-3-030-30853-7_9 . .

TY  - JOUR
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Pijović, Milena
AU  - Waisi, Hadi
AU  - Dodevski, Vladimir
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8904
AB  - In order to clarify relationship between apricot kernel shell biomass slow pyrolysis mechanism and its main constituents (viz. hemicelluloses, cellulose and lignin), the reactivity effects of main constituents on pyrolysis characteristics were determined by the non-isothermal simultaneous thermal analysis. It was found that four-step (parallel) reaction model is suitable for studying the slow pyrolysis process, within the semi-global model which excludes the strong interaction between biomass constituents (pseudo-components). The application of the proposed model was allowed by the results obtained from KAS iterative isoconversional (model-free) approach. The valorization of the model was confirmed by the process optimization. The complex (cumulative) apricot kernel shell pyrolysis rate curves at different heating rates are successfully resolved into the individual decomposition rate curves (arising from thermal conversion of hemicelluloses, cellulose, and primary/secondary lignin fragments) by four-parameter Fraser–Suzuki function. Besides hemicelluloses and cellulose pyrolyses, the proposed model distinguishes primary and secondary lignin reactions, which enhance the gaseous products releasing (primarily CO and CO2 gases) and charification of the solid residue (increased the bio-char yield). © 2020, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)
VL  - 142
IS  - 2
SP  - 565
EP  - 579
DO  - 10.1007/s10973-020-09307-5
ER  - 

@article{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Pijović, Milena and Waisi, Hadi and Dodevski, Vladimir and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "In order to clarify relationship between apricot kernel shell biomass slow pyrolysis mechanism and its main constituents (viz. hemicelluloses, cellulose and lignin), the reactivity effects of main constituents on pyrolysis characteristics were determined by the non-isothermal simultaneous thermal analysis. It was found that four-step (parallel) reaction model is suitable for studying the slow pyrolysis process, within the semi-global model which excludes the strong interaction between biomass constituents (pseudo-components). The application of the proposed model was allowed by the results obtained from KAS iterative isoconversional (model-free) approach. The valorization of the model was confirmed by the process optimization. The complex (cumulative) apricot kernel shell pyrolysis rate curves at different heating rates are successfully resolved into the individual decomposition rate curves (arising from thermal conversion of hemicelluloses, cellulose, and primary/secondary lignin fragments) by four-parameter Fraser–Suzuki function. Besides hemicelluloses and cellulose pyrolyses, the proposed model distinguishes primary and secondary lignin reactions, which enhance the gaseous products releasing (primarily CO and CO2 gases) and charification of the solid residue (increased the bio-char yield). © 2020, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)",
volume = "142",
number = "2",
pages = "565-579",
doi = "10.1007/s10973-020-09307-5"
}

Manić, N. G., Janković, B. Ž., Pijović, M., Waisi, H., Dodevski, V., Stojiljković, D.,& Jovanović, V. V.. (2020). Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA). in Journal of Thermal Analysis and Calorimetry, 142(2), 565-579.
https://doi.org/10.1007/s10973-020-09307-5

Manić NG, Janković BŽ, Pijović M, Waisi H, Dodevski V, Stojiljković D, Jovanović VV. Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA). in Journal of Thermal Analysis and Calorimetry. 2020;142(2):565-579.
doi:10.1007/s10973-020-09307-5 .

Manić, Nebojša G., Janković, Bojan Ž., Pijović, Milena, Waisi, Hadi, Dodevski, Vladimir, Stojiljković, Dragoslava, Jovanović, Vladimir V., "Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):565-579,
https://doi.org/10.1007/s10973-020-09307-5 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Smičiklas, Ivana D.
AU  - Manić, Nebojša G.
AU  - Mraković, Ana Đ.
AU  - Mandić, Milica
AU  - Veljović, Đorđe N.
AU  - Jović, Mihajlo D.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8836
AB  - Thermo-oxidative degradation of mollusk shells to CaO through intermediate phase of CaCO3 has been investigated using various analytical techniques. Powders of shells species (Dosinia exoleta and Ostrea edulis), with particle size fractions of 0.045 – 0.125 mm, 0.125–0.2 mm, and 0.2–1 mm, were subjected to degradation at the various heating rates (5, 10, 15 and 20 °C min−1). Degradation pathway of this carbonate-rich waste material has not yet been analyzed in detail at particulate level. Understanding transformation process in air should lead to control over yield and morphology of final product. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) techniques were used to benchmark transformation steps at different heating rates and final decarbonation temperatures, while scanning electron microscope (SEM) was used to analyze the effect of temperature on evolution of morphological changes for particles of different fractions. It was found that sintering in the presence of carbon dioxide (CO2) could be triggered by agglomeration of CaO crystals, enhanced by CO2 adsorption that increases surface energy. © 2020 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors
VL  - 686
SP  - 178568
DO  - 10.1016/j.tca.2020.178568
ER  - 

@article{
author = "Janković, Bojan Ž. and Smičiklas, Ivana D. and Manić, Nebojša G. and Mraković, Ana Đ. and Mandić, Milica and Veljović, Đorđe N. and Jović, Mihajlo D.",
year = "2020",
abstract = "Thermo-oxidative degradation of mollusk shells to CaO through intermediate phase of CaCO3 has been investigated using various analytical techniques. Powders of shells species (Dosinia exoleta and Ostrea edulis), with particle size fractions of 0.045 – 0.125 mm, 0.125–0.2 mm, and 0.2–1 mm, were subjected to degradation at the various heating rates (5, 10, 15 and 20 °C min−1). Degradation pathway of this carbonate-rich waste material has not yet been analyzed in detail at particulate level. Understanding transformation process in air should lead to control over yield and morphology of final product. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) techniques were used to benchmark transformation steps at different heating rates and final decarbonation temperatures, while scanning electron microscope (SEM) was used to analyze the effect of temperature on evolution of morphological changes for particles of different fractions. It was found that sintering in the presence of carbon dioxide (CO2) could be triggered by agglomeration of CaO crystals, enhanced by CO2 adsorption that increases surface energy. © 2020 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors",
volume = "686",
pages = "178568",
doi = "10.1016/j.tca.2020.178568"
}

Janković, B. Ž., Smičiklas, I. D., Manić, N. G., Mraković, A. Đ., Mandić, M., Veljović, Đ. N.,& Jović, M. D.. (2020). Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors. in Thermochimica Acta, 686, 178568.
https://doi.org/10.1016/j.tca.2020.178568

Janković BŽ, Smičiklas ID, Manić NG, Mraković AĐ, Mandić M, Veljović ĐN, Jović MD. Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors. in Thermochimica Acta. 2020;686:178568.
doi:10.1016/j.tca.2020.178568 .

Janković, Bojan Ž., Smičiklas, Ivana D., Manić, Nebojša G., Mraković, Ana Đ., Mandić, Milica, Veljović, Đorđe N., Jović, Mihajlo D., "Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors" in Thermochimica Acta, 686 (2020):178568,
https://doi.org/10.1016/j.tca.2020.178568 . .

TY  - JOUR
AU  - Milanović, Srđan
AU  - Potkonjak, Nebojša I.
AU  - Mandušić, Vesna
AU  - Čokeša, Đuro
AU  - Hranisavljević, Jelena
AU  - Kaluđerović, Branka V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8975
AB  - Carbonaceous materials as well as its form functionalized with metallic silver have been prepared by hydrothermal carbonization of fructose. Results are presented to show that nanostructured silver was obtained through the functionalization process. The carbonaceous materials were characterized by: nitrogen adsorption/desorption measurement, XRD, SEM/EDS and FTIR. Samples functionalized with silver were analyzed by: XRD and SEM/EDS. The XRD analysis showed that the carbonaceous materials functionalized with silver by hydrothermal carbonization process were successfully performed. Size of silver particles was found to be approximately 32 nm, indicating formation of nanostructure. All samples were tested as an antimicrobial agent for water disinfection. Presence of nanostructured silver in the sample containing 1 mg/mL carbonaceous materials significantly decreased the number of CFU (dCFU = 97.33 %) if compared to the same sample containing the same amount of carbonaceous materials but without of silver (dCFU 65.33 %).
T2  - Science of Sintering
T1  - Antimicrobial effects of carbonaceous material functionalized with silver
VL  - 52
IS  - 1
SP  - 87
EP  - 95
DO  - 10.2298/SOS2001087M
ER  - 

@article{
author = "Milanović, Srđan and Potkonjak, Nebojša I. and Mandušić, Vesna and Čokeša, Đuro and Hranisavljević, Jelena and Kaluđerović, Branka V.",
year = "2020",
abstract = "Carbonaceous materials as well as its form functionalized with metallic silver have been prepared by hydrothermal carbonization of fructose. Results are presented to show that nanostructured silver was obtained through the functionalization process. The carbonaceous materials were characterized by: nitrogen adsorption/desorption measurement, XRD, SEM/EDS and FTIR. Samples functionalized with silver were analyzed by: XRD and SEM/EDS. The XRD analysis showed that the carbonaceous materials functionalized with silver by hydrothermal carbonization process were successfully performed. Size of silver particles was found to be approximately 32 nm, indicating formation of nanostructure. All samples were tested as an antimicrobial agent for water disinfection. Presence of nanostructured silver in the sample containing 1 mg/mL carbonaceous materials significantly decreased the number of CFU (dCFU = 97.33 %) if compared to the same sample containing the same amount of carbonaceous materials but without of silver (dCFU 65.33 %).",
journal = "Science of Sintering",
title = "Antimicrobial effects of carbonaceous material functionalized with silver",
volume = "52",
number = "1",
pages = "87-95",
doi = "10.2298/SOS2001087M"
}

Milanović, S., Potkonjak, N. I., Mandušić, V., Čokeša, Đ., Hranisavljević, J.,& Kaluđerović, B. V.. (2020). Antimicrobial effects of carbonaceous material functionalized with silver. in Science of Sintering, 52(1), 87-95.
https://doi.org/10.2298/SOS2001087M

Milanović S, Potkonjak NI, Mandušić V, Čokeša Đ, Hranisavljević J, Kaluđerović BV. Antimicrobial effects of carbonaceous material functionalized with silver. in Science of Sintering. 2020;52(1):87-95.
doi:10.2298/SOS2001087M .

Milanović, Srđan, Potkonjak, Nebojša I., Mandušić, Vesna, Čokeša, Đuro, Hranisavljević, Jelena, Kaluđerović, Branka V., "Antimicrobial effects of carbonaceous material functionalized with silver" in Science of Sintering, 52, no. 1 (2020):87-95,
https://doi.org/10.2298/SOS2001087M . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Dodevski, Vladimir
AU  - Radojević, Miloš
AU  - Stojiljković, Dragoslava
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8906
AB  - The combustion reactivity of plane tree seeds biomass feedstock was studied using the thermogravimetry. The effects of atmosphere (O2/Ar) and different oxygen concentrations (O2/Ar = 20:80% and O2/Ar = 50:50%) on the combustion characteristics were investigated. When combustion atmosphere changes from O2/Ar = 50:50% to O2/Ar = 20:80% (reducing oxygen concentrations), the burnout temperature increases by 29.50 °C for tested biomass. Obtained results demonstrate the ease of ignition of investigated lignocellulosic material for O2/Ar = 50:50% ratio compared with O2/Ar = 20:80% ratio, and the actual trend is maintained under the condition when the heating rate increases. The reducing of oxygen concentration strongly influenced the amount of final residue products, particularly at higher heating rates (beyond 10 °C min−1). Kinetic analysis applied to investigated process shows strongly dependencies of both the apparent activation energy (E) and pre-exponential factor (logA) with conversion (α), especially in devolatilization and combustion of volatiles reaction stages. Large variation in E is attributed to existence of multiple parallel reactions. In order to solve this problem, the deconvolution technique that uses Fraser–Suzuki function was applied. It was shown that Fraser–Suzuki function fits successfully kinetic rate curves of entire combustion process, assuming the best selected nth-order reaction model.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere
VL  - 142
IS  - 2
SP  - 953
EP  - 976
DO  - 10.1007/s10973-019-09154-z
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Dodevski, Vladimir and Radojević, Miloš and Stojiljković, Dragoslava",
year = "2020",
abstract = "The combustion reactivity of plane tree seeds biomass feedstock was studied using the thermogravimetry. The effects of atmosphere (O2/Ar) and different oxygen concentrations (O2/Ar = 20:80% and O2/Ar = 50:50%) on the combustion characteristics were investigated. When combustion atmosphere changes from O2/Ar = 50:50% to O2/Ar = 20:80% (reducing oxygen concentrations), the burnout temperature increases by 29.50 °C for tested biomass. Obtained results demonstrate the ease of ignition of investigated lignocellulosic material for O2/Ar = 50:50% ratio compared with O2/Ar = 20:80% ratio, and the actual trend is maintained under the condition when the heating rate increases. The reducing of oxygen concentration strongly influenced the amount of final residue products, particularly at higher heating rates (beyond 10 °C min−1). Kinetic analysis applied to investigated process shows strongly dependencies of both the apparent activation energy (E) and pre-exponential factor (logA) with conversion (α), especially in devolatilization and combustion of volatiles reaction stages. Large variation in E is attributed to existence of multiple parallel reactions. In order to solve this problem, the deconvolution technique that uses Fraser–Suzuki function was applied. It was shown that Fraser–Suzuki function fits successfully kinetic rate curves of entire combustion process, assuming the best selected nth-order reaction model.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere",
volume = "142",
number = "2",
pages = "953-976",
doi = "10.1007/s10973-019-09154-z"
}

Janković, B. Ž., Manić, N. G., Dodevski, V., Radojević, M.,& Stojiljković, D.. (2020). Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere. in Journal of Thermal Analysis and Calorimetry, 142(2), 953-976.
https://doi.org/10.1007/s10973-019-09154-z

Janković BŽ, Manić NG, Dodevski V, Radojević M, Stojiljković D. Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere. in Journal of Thermal Analysis and Calorimetry. 2020;142(2):953-976.
doi:10.1007/s10973-019-09154-z .

Janković, Bojan Ž., Manić, Nebojša G., Dodevski, Vladimir, Radojević, Miloš, Stojiljković, Dragoslava, "Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):953-976,
https://doi.org/10.1007/s10973-019-09154-z . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Stojiljković, Dragoslava
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8899
AB  - Slow pyrolysis characteristics of agricultural residue feedstocks (corn brakes, wheat straw, and hazelnut shell) were investigated by simultaneous thermal analysis (STA–TG–DTG–DSC), coupled with mass spectrometry (MS). Thermal decomposition of agricultural residues was divided into three stages, corresponding to removal of water, devolatilization, and formation of bio-char. It was found that differences in thermal behavior of samples are due to differences in their composition. The MS results showed that H2, CH4, H2O, CO2 (C3H8), CO, and C2H6 were the main gaseous products released during pyrolysis. It was shown that hazelnut shells could be a good combustion fuel, since during its pyrolysis at high temperature, more gaseous products compared to other systems are very favored. For hazelnut shell pyrolysis, the CO2 can be used on the large scale for the production of CO-rich syngas. © 2019, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques
VL  - 139
IS  - 5
SP  - 3091
EP  - 3106
DO  - 10.1007/s10973-019-08733-4
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Stojiljković, Dragoslava",
year = "2020",
abstract = "Slow pyrolysis characteristics of agricultural residue feedstocks (corn brakes, wheat straw, and hazelnut shell) were investigated by simultaneous thermal analysis (STA–TG–DTG–DSC), coupled with mass spectrometry (MS). Thermal decomposition of agricultural residues was divided into three stages, corresponding to removal of water, devolatilization, and formation of bio-char. It was found that differences in thermal behavior of samples are due to differences in their composition. The MS results showed that H2, CH4, H2O, CO2 (C3H8), CO, and C2H6 were the main gaseous products released during pyrolysis. It was shown that hazelnut shells could be a good combustion fuel, since during its pyrolysis at high temperature, more gaseous products compared to other systems are very favored. For hazelnut shell pyrolysis, the CO2 can be used on the large scale for the production of CO-rich syngas. © 2019, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques",
volume = "139",
number = "5",
pages = "3091-3106",
doi = "10.1007/s10973-019-08733-4"
}

Janković, B. Ž., Manić, N. G.,& Stojiljković, D.. (2020). The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques. in Journal of Thermal Analysis and Calorimetry, 139(5), 3091-3106.
https://doi.org/10.1007/s10973-019-08733-4

Janković BŽ, Manić NG, Stojiljković D. The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques. in Journal of Thermal Analysis and Calorimetry. 2020;139(5):3091-3106.
doi:10.1007/s10973-019-08733-4 .

Janković, Bojan Ž., Manić, Nebojša G., Stojiljković, Dragoslava, "The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques" in Journal of Thermal Analysis and Calorimetry, 139, no. 5 (2020):3091-3106,
https://doi.org/10.1007/s10973-019-08733-4 . .

TY  - JOUR
AU  - Cvijović, Đurđe
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8832
AB  - Using the Hurwitz zeta and the alternating Hurwitz zeta function, ζ(s,a) and ζ⁎(s,a), it was shown through classical analysis and in a straightforward and unified manner that asζ(s,a) with a>0 and s>1 is strictly log-convex in s on (1,∞), whereas asζ⁎(s,a) for a,s>0 is strictly concave in s on (0,∞). As an immediate consequence, convexity properties of the Riemann zeta function as well as the Dirichlet beta, eta and lambda function were deduced. © 2020 Elsevier Inc.
T2  - Journal of Mathematical Analysis and Applications
T1  - A note on convexity properties of functions related to the Hurwitz zeta and alternating Hurwitz zeta function
VL  - 487
IS  - 1
SP  - 123972
DO  - 10.1016/j.jmaa.2020.123972
ER  - 

@article{
author = "Cvijović, Đurđe",
year = "2020",
abstract = "Using the Hurwitz zeta and the alternating Hurwitz zeta function, ζ(s,a) and ζ⁎(s,a), it was shown through classical analysis and in a straightforward and unified manner that asζ(s,a) with a>0 and s>1 is strictly log-convex in s on (1,∞), whereas asζ⁎(s,a) for a,s>0 is strictly concave in s on (0,∞). As an immediate consequence, convexity properties of the Riemann zeta function as well as the Dirichlet beta, eta and lambda function were deduced. © 2020 Elsevier Inc.",
journal = "Journal of Mathematical Analysis and Applications",
title = "A note on convexity properties of functions related to the Hurwitz zeta and alternating Hurwitz zeta function",
volume = "487",
number = "1",
pages = "123972",
doi = "10.1016/j.jmaa.2020.123972"
}

Cvijović, Đ.. (2020). A note on convexity properties of functions related to the Hurwitz zeta and alternating Hurwitz zeta function. in Journal of Mathematical Analysis and Applications, 487(1), 123972.
https://doi.org/10.1016/j.jmaa.2020.123972

Cvijović Đ. A note on convexity properties of functions related to the Hurwitz zeta and alternating Hurwitz zeta function. in Journal of Mathematical Analysis and Applications. 2020;487(1):123972.
doi:10.1016/j.jmaa.2020.123972 .

Cvijović, Đurđe, "A note on convexity properties of functions related to the Hurwitz zeta and alternating Hurwitz zeta function" in Journal of Mathematical Analysis and Applications, 487, no. 1 (2020):123972,
https://doi.org/10.1016/j.jmaa.2020.123972 . .

TY  - JOUR
AU  - Cvijović, Đurđe
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8886
AB  - A dozen families of integer–valued polynomials arising in finite summation of various trigonometric sums are known and all of them were deduced through numerical analysis methods. Here, using simple arguments commonly applied in work with polynomial sequences, we examined such expressions in full detail as well as in a systematic and unified manner. Two new very general integer–valued polynomial families (along with six other families derived from them, also integer–valued, including three previously studied) were obtained and they are related to each other by a binomial transform of sequences and associated with certain cosecant and cotangent sums.
T2  - Journal of Mathematical Analysis and Applications
T1  - Two general families of integer–valued polynomials associated with finite trigonometric sums
VL  - 488
IS  - 1
SP  - 124057
DO  - 10.1016/j.jmaa.2020.124057
ER  - 

@article{
author = "Cvijović, Đurđe",
year = "2020",
abstract = "A dozen families of integer–valued polynomials arising in finite summation of various trigonometric sums are known and all of them were deduced through numerical analysis methods. Here, using simple arguments commonly applied in work with polynomial sequences, we examined such expressions in full detail as well as in a systematic and unified manner. Two new very general integer–valued polynomial families (along with six other families derived from them, also integer–valued, including three previously studied) were obtained and they are related to each other by a binomial transform of sequences and associated with certain cosecant and cotangent sums.",
journal = "Journal of Mathematical Analysis and Applications",
title = "Two general families of integer–valued polynomials associated with finite trigonometric sums",
volume = "488",
number = "1",
pages = "124057",
doi = "10.1016/j.jmaa.2020.124057"
}

Cvijović, Đ.. (2020). Two general families of integer–valued polynomials associated with finite trigonometric sums. in Journal of Mathematical Analysis and Applications, 488(1), 124057.
https://doi.org/10.1016/j.jmaa.2020.124057

Cvijović Đ. Two general families of integer–valued polynomials associated with finite trigonometric sums. in Journal of Mathematical Analysis and Applications. 2020;488(1):124057.
doi:10.1016/j.jmaa.2020.124057 .

Cvijović, Đurđe, "Two general families of integer–valued polynomials associated with finite trigonometric sums" in Journal of Mathematical Analysis and Applications, 488, no. 1 (2020):124057,
https://doi.org/10.1016/j.jmaa.2020.124057 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8518
AB  - During the utilization of coal in large power plants, one of the major logistical issues is related to spontaneous ignition of the coal. This characteristic of coal depends on the rank and type of the coal, the content of the moisture and volatile matter as well as particle size distribution. This paper presents the novel approach for determination of spontaneous ignition potential of the coal developed as the internal laboratory experimental method. The experimental tests were performed by thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG) of tested samples at five different heating rates: 3, 5, 7, 10 and 20 K min−1 under an air atmosphere. The TGA results were used for determination of tangent slope of the mass loss rate curves in the zone of the release of volatiles at considered heating rates for all coal samples. The linear interpolation of the data obtained by performed tangent slope analysis and heating rates provides the straight line unique for each tested sample. According to the standard method, the slope of the obtained straight line is defined as thermogravimetric index of spontaneous ignition (TGspi). In addition, a new formula for determination of TGspi index was provided. Three different coal samples were analyzed and classified according to the spontaneous ignition potential, based on the obtained values for TGspi by standard procedure and also using a newly proposed method. By varying the gradient of linear dependence of self-heating coefficient against reference temperatures (Tref,i), the mass and heat transfer limitations for different coals were discussed. © 2019 The Combustion Institute
T2  - Combustion and Flame
T1  - The assessment of spontaneous ignition potential of coals using TGA–DTG technique
VL  - 211
SP  - 32
EP  - 43
DO  - 10.1016/j.combustflame.2019.09.020
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "During the utilization of coal in large power plants, one of the major logistical issues is related to spontaneous ignition of the coal. This characteristic of coal depends on the rank and type of the coal, the content of the moisture and volatile matter as well as particle size distribution. This paper presents the novel approach for determination of spontaneous ignition potential of the coal developed as the internal laboratory experimental method. The experimental tests were performed by thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG) of tested samples at five different heating rates: 3, 5, 7, 10 and 20 K min−1 under an air atmosphere. The TGA results were used for determination of tangent slope of the mass loss rate curves in the zone of the release of volatiles at considered heating rates for all coal samples. The linear interpolation of the data obtained by performed tangent slope analysis and heating rates provides the straight line unique for each tested sample. According to the standard method, the slope of the obtained straight line is defined as thermogravimetric index of spontaneous ignition (TGspi). In addition, a new formula for determination of TGspi index was provided. Three different coal samples were analyzed and classified according to the spontaneous ignition potential, based on the obtained values for TGspi by standard procedure and also using a newly proposed method. By varying the gradient of linear dependence of self-heating coefficient against reference temperatures (Tref,i), the mass and heat transfer limitations for different coals were discussed. © 2019 The Combustion Institute",
journal = "Combustion and Flame",
title = "The assessment of spontaneous ignition potential of coals using TGA–DTG technique",
volume = "211",
pages = "32-43",
doi = "10.1016/j.combustflame.2019.09.020"
}

Janković, B. Ž., Manić, N. G., Stojiljković, D.,& Jovanović, V. V.. (2020). The assessment of spontaneous ignition potential of coals using TGA–DTG technique. in Combustion and Flame, 211, 32-43.
https://doi.org/10.1016/j.combustflame.2019.09.020

Janković BŽ, Manić NG, Stojiljković D, Jovanović VV. The assessment of spontaneous ignition potential of coals using TGA–DTG technique. in Combustion and Flame. 2020;211:32-43.
doi:10.1016/j.combustflame.2019.09.020 .

Janković, Bojan Ž., Manić, Nebojša G., Stojiljković, Dragoslava, Jovanović, Vladimir V., "The assessment of spontaneous ignition potential of coals using TGA–DTG technique" in Combustion and Flame, 211 (2020):32-43,
https://doi.org/10.1016/j.combustflame.2019.09.020 . .

TY  - CONF
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Dodevski, Vladimir
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8527
AB  - As waste biomass from fruit processing industry, apricot kernel shells have a potential for conversion to renewable energy through a thermo-chemical process such as pyrolysis. However, due to major differences of biomass characteristics as the well-known issue, it is extremely important to perform detailed analysis of biomass samples from the same type (or same species) but from different geographical regions. Regarding full characterization of considered biomass material and to facilitate further process development, in this paper, the advanced mathematical model for kinetic analysis was used. All performed kinetic modeling represents the process kinetics developed and validated on thermal decomposition studies using simultaneous thermogravimetric analysis (TGA) – differential thermal analysis (DTA) – mass spectrometry (MS) scanning, at four heating rates of 5, 10, 15 and 20 °C min−1, over temperature range 30–900 °C and under an argon (Ar) atmosphere. Model-free analysis for base prediction of decomposition process and deconvolution approach by Fraser-Suzuki functions were utilized for determination of effective activation energies (E), pre-exponential factors (A) and fractional contributions (φ), as well as for separation of overlapping reactions. Comparative study of kinetic results with emission analysis of evolved gas species was also implemented in order to determine the more comprehensive pyrolysis kinetics model. Obtained results strongly indicated that the Fraser-Suzuki deconvolution provides excellent quality of fits with experimental ones, and could be employed to predict devolatilization rates with a high probability. From energy compensation effect properties, it was revealed the existence of unconventional thermal lag due to heat demand by chemical reaction. © Springer Nature Switzerland AG 2020.
C3  - Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019
T1  - The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions
VL  - 90
SP  - 39
EP  - 60
DO  - 10.1007/978-3-030-30853-7_3
ER  - 

@conference{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Dodevski, Vladimir and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "As waste biomass from fruit processing industry, apricot kernel shells have a potential for conversion to renewable energy through a thermo-chemical process such as pyrolysis. However, due to major differences of biomass characteristics as the well-known issue, it is extremely important to perform detailed analysis of biomass samples from the same type (or same species) but from different geographical regions. Regarding full characterization of considered biomass material and to facilitate further process development, in this paper, the advanced mathematical model for kinetic analysis was used. All performed kinetic modeling represents the process kinetics developed and validated on thermal decomposition studies using simultaneous thermogravimetric analysis (TGA) – differential thermal analysis (DTA) – mass spectrometry (MS) scanning, at four heating rates of 5, 10, 15 and 20 °C min−1, over temperature range 30–900 °C and under an argon (Ar) atmosphere. Model-free analysis for base prediction of decomposition process and deconvolution approach by Fraser-Suzuki functions were utilized for determination of effective activation energies (E), pre-exponential factors (A) and fractional contributions (φ), as well as for separation of overlapping reactions. Comparative study of kinetic results with emission analysis of evolved gas species was also implemented in order to determine the more comprehensive pyrolysis kinetics model. Obtained results strongly indicated that the Fraser-Suzuki deconvolution provides excellent quality of fits with experimental ones, and could be employed to predict devolatilization rates with a high probability. From energy compensation effect properties, it was revealed the existence of unconventional thermal lag due to heat demand by chemical reaction. © Springer Nature Switzerland AG 2020.",
journal = "Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019",
title = "The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions",
volume = "90",
pages = "39-60",
doi = "10.1007/978-3-030-30853-7_3"
}

Manić, N. G., Janković, B. Ž., Dodevski, V., Stojiljković, D.,& Jovanović, V. V.. (2020). The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions. in Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019, 90, 39-60.
https://doi.org/10.1007/978-3-030-30853-7_3

Manić NG, Janković BŽ, Dodevski V, Stojiljković D, Jovanović VV. The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions. in Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019. 2020;90:39-60.
doi:10.1007/978-3-030-30853-7_3 .

Manić, Nebojša G., Janković, Bojan Ž., Dodevski, Vladimir, Stojiljković, Dragoslava, Jovanović, Vladimir V., "The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions" in Computational and Experimental Approaches in Materials Science and Engineering, CNNTech 2019, 90 (2020):39-60,
https://doi.org/10.1007/978-3-030-30853-7_3 . .

TY  - JOUR
AU  - Mićović, Dragana
AU  - Pagnacco, Maja C.
AU  - Banković, Predrag T.
AU  - Maletaškić, Jelena
AU  - Matović, Branko
AU  - Đokić, Veljko R.
AU  - Stojmenović, Marija
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8599
AB  - Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 °C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-δ and Ce1-xPrxO2-δ (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 °C), and their potential application as environmentally friendly pigments of desired colour is confirmed.
T2  - Processing and Application of Ceramics
T1  - The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study
VL  - 13
IS  - 3
SP  - 310
EP  - 321
DO  - 10.2298/PAC1903310M
ER  - 

@article{
author = "Mićović, Dragana and Pagnacco, Maja C. and Banković, Predrag T. and Maletaškić, Jelena and Matović, Branko and Đokić, Veljko R. and Stojmenović, Marija",
year = "2019",
abstract = "Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 °C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-δ and Ce1-xPrxO2-δ (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 °C), and their potential application as environmentally friendly pigments of desired colour is confirmed.",
journal = "Processing and Application of Ceramics",
title = "The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study",
volume = "13",
number = "3",
pages = "310-321",
doi = "10.2298/PAC1903310M"
}

Mićović, D., Pagnacco, M. C., Banković, P. T., Maletaškić, J., Matović, B., Đokić, V. R.,& Stojmenović, M.. (2019). The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study. in Processing and Application of Ceramics, 13(3), 310-321.
https://doi.org/10.2298/PAC1903310M

Mićović D, Pagnacco MC, Banković PT, Maletaškić J, Matović B, Đokić VR, Stojmenović M. The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study. in Processing and Application of Ceramics. 2019;13(3):310-321.
doi:10.2298/PAC1903310M .

Mićović, Dragana, Pagnacco, Maja C., Banković, Predrag T., Maletaškić, Jelena, Matović, Branko, Đokić, Veljko R., Stojmenović, Marija, "The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study" in Processing and Application of Ceramics, 13, no. 3 (2019):310-321,
https://doi.org/10.2298/PAC1903310M . .

TY  - JOUR
AU  - Stevanović, Kristina
AU  - Bubanja, Itana Nuša M.
AU  - Stanisavljev, Dragomir R.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12523
AB  - An intriguing step of the Bray–Liebhafsky oscillatory reaction, that is, iodine oxidation with hydrogen peroxide, was examined. This process is characterized by enormous stochasticity of reaction induction times in the presence of mild mixing. In the present investigations, it was found that even in the presence of mixing, stochasticity is seriously reduced with simple glass powder addition. Using transparent glass, standard deviations changed from 184.9 to 10.6 min for 19 °C, and from 128.2 to 1.9 min for 27 °C. Repeating experiments with amber glass further confirmed those results as standard deviations changed from the mentioned ones to 8.7 min for 19 °C and to 2.5 min for 27 °C. Inert glass particles enhanced heterogeneous nucleation of oxygen formed in chemical reactions. Together with the previous analysis of the involved kinetic barrier of the whole reaction, it is an additional strong evidence of a possible energetic coupling between nucleation of glass cavities and chemical reactions. Such processes are usually neglected and may considerably change the investigations of the reaction mechanisms in other complex systems. Reaction was followed by the potentiometric method at 19 and 27 °C. The adjusted stopped-flow titration method was used in order to confirm the high degree of iodine to iodate conversion in the presence of nucleation centers.
T2  - Journal of Physical Chemistry C
T1  - Is Iodine Oxidation with Hydrogen Peroxide Coupled with Nucleation Processes?
VL  - 123
IS  - 27
SP  - 16671
EP  - 16680
DO  - 10.1021/acs.jpcc.9b02563
ER  - 

@article{
author = "Stevanović, Kristina and Bubanja, Itana Nuša M. and Stanisavljev, Dragomir R.",
year = "2019",
abstract = "An intriguing step of the Bray–Liebhafsky oscillatory reaction, that is, iodine oxidation with hydrogen peroxide, was examined. This process is characterized by enormous stochasticity of reaction induction times in the presence of mild mixing. In the present investigations, it was found that even in the presence of mixing, stochasticity is seriously reduced with simple glass powder addition. Using transparent glass, standard deviations changed from 184.9 to 10.6 min for 19 °C, and from 128.2 to 1.9 min for 27 °C. Repeating experiments with amber glass further confirmed those results as standard deviations changed from the mentioned ones to 8.7 min for 19 °C and to 2.5 min for 27 °C. Inert glass particles enhanced heterogeneous nucleation of oxygen formed in chemical reactions. Together with the previous analysis of the involved kinetic barrier of the whole reaction, it is an additional strong evidence of a possible energetic coupling between nucleation of glass cavities and chemical reactions. Such processes are usually neglected and may considerably change the investigations of the reaction mechanisms in other complex systems. Reaction was followed by the potentiometric method at 19 and 27 °C. The adjusted stopped-flow titration method was used in order to confirm the high degree of iodine to iodate conversion in the presence of nucleation centers.",
journal = "Journal of Physical Chemistry C",
title = "Is Iodine Oxidation with Hydrogen Peroxide Coupled with Nucleation Processes?",
volume = "123",
number = "27",
pages = "16671-16680",
doi = "10.1021/acs.jpcc.9b02563"
}

Stevanović, K., Bubanja, I. N. M.,& Stanisavljev, D. R.. (2019). Is Iodine Oxidation with Hydrogen Peroxide Coupled with Nucleation Processes?. in Journal of Physical Chemistry C, 123(27), 16671-16680.
https://doi.org/10.1021/acs.jpcc.9b02563

Stevanović K, Bubanja INM, Stanisavljev DR. Is Iodine Oxidation with Hydrogen Peroxide Coupled with Nucleation Processes?. in Journal of Physical Chemistry C. 2019;123(27):16671-16680.
doi:10.1021/acs.jpcc.9b02563 .

Stevanović, Kristina, Bubanja, Itana Nuša M., Stanisavljev, Dragomir R., "Is Iodine Oxidation with Hydrogen Peroxide Coupled with Nucleation Processes?" in Journal of Physical Chemistry C, 123, no. 27 (2019):16671-16680,
https://doi.org/10.1021/acs.jpcc.9b02563 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Dodevski, Vladimir
AU  - Radović, Ivana M.
AU  - Pijović, Milena
AU  - Katnić, Đurica B.
AU  - Tasić, Gvozden S.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8393
AB  - This paper investigates the ability of waste apricot (Prunus armeniaca) kernel shells (AKS) bio-char prepared by single-step carbonization process at 850 °C (residence time of 1 h) for possible removal of toxic elements and organic micro-pollutants. The experiment that was performed as well as parameters used proved to be optimal for bio-char production as adsorbing medium, where last issue is validated by multiform material characterization techniques. It has been shown that the produced bio-char possess highly-porous morphology features, with large specific surface area (328.570 m2 g−1). The obtained product was characterized by various pore sizes (including super-micropores and mesopores with maximum pore size of 2.24 nm) structures. Preliminary results are indicated that obtained bio-char can shows increased affinity to possible adsorption of the small organic molecule contaminants upgraded by its physico-chemical properties. Cost estimation of AKS bio-char production substantiated its cost effectiveness and its good physical and chemical properties for future design in batch adsorption and regeneration tests. It was established that AKS produced bio-char was 2.5 times cheaper than the commercially available activated carbon. Bio-char exhibits promising removal performances for potential adsorption of heavy metal and organic micro-pollutants from wastewaters systems, as indicated by material textures and spectroscopy measurements. © 2019 Elsevier Ltd
T2  - Journal of Cleaner Production
T1  - Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization
VL  - 236
SP  - 117614
DO  - 10.1016/j.jclepro.2019.117614
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Dodevski, Vladimir and Radović, Ivana M. and Pijović, Milena and Katnić, Đurica B. and Tasić, Gvozden S.",
year = "2019",
abstract = "This paper investigates the ability of waste apricot (Prunus armeniaca) kernel shells (AKS) bio-char prepared by single-step carbonization process at 850 °C (residence time of 1 h) for possible removal of toxic elements and organic micro-pollutants. The experiment that was performed as well as parameters used proved to be optimal for bio-char production as adsorbing medium, where last issue is validated by multiform material characterization techniques. It has been shown that the produced bio-char possess highly-porous morphology features, with large specific surface area (328.570 m2 g−1). The obtained product was characterized by various pore sizes (including super-micropores and mesopores with maximum pore size of 2.24 nm) structures. Preliminary results are indicated that obtained bio-char can shows increased affinity to possible adsorption of the small organic molecule contaminants upgraded by its physico-chemical properties. Cost estimation of AKS bio-char production substantiated its cost effectiveness and its good physical and chemical properties for future design in batch adsorption and regeneration tests. It was established that AKS produced bio-char was 2.5 times cheaper than the commercially available activated carbon. Bio-char exhibits promising removal performances for potential adsorption of heavy metal and organic micro-pollutants from wastewaters systems, as indicated by material textures and spectroscopy measurements. © 2019 Elsevier Ltd",
journal = "Journal of Cleaner Production",
title = "Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization",
volume = "236",
pages = "117614",
doi = "10.1016/j.jclepro.2019.117614"
}

Janković, B. Ž., Manić, N. G., Dodevski, V., Radović, I. M., Pijović, M., Katnić, Đ. B.,& Tasić, G. S.. (2019). Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization. in Journal of Cleaner Production, 236, 117614.
https://doi.org/10.1016/j.jclepro.2019.117614

Janković BŽ, Manić NG, Dodevski V, Radović IM, Pijović M, Katnić ĐB, Tasić GS. Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization. in Journal of Cleaner Production. 2019;236:117614.
doi:10.1016/j.jclepro.2019.117614 .

Janković, Bojan Ž., Manić, Nebojša G., Dodevski, Vladimir, Radović, Ivana M., Pijović, Milena, Katnić, Đurica B., Tasić, Gvozden S., "Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization" in Journal of Cleaner Production, 236 (2019):117614,
https://doi.org/10.1016/j.jclepro.2019.117614 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Radović, Ivana M.
AU  - Janković, Marija M.
AU  - Rajačić, Milica
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8424
AB  - Thermal and kinetics behaviors of the low-rank coals from different annual periods (Kolubara (2015)/(2018) and TENT A (2015)/(2018)) during combustion process in air atmosphere, using simultaneous TGA-DTG-DTA-MS measurements were investigated. The FTIR spectroscopy was used to gain additional information on coals structures. Kolubara and TENT A coals from (2015)/(2018) annual periods show differences in reactivity, where the reason for this demeanor lies in differences in decomposition kinetics of these coals. The conclusions made on the basis of model-based analysis clearly indicate that differences in combustion reaction pathways (especially in transitions from primary to secondary combustion stages) arise from continual changes in physical structure of the coals. It was found that the mineral matter significantly influences on the reactivity of coal during combustion, where this is particularly pronounced for TENT A coal particles. © 2019 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques
VL  - 679
SP  - 178337
DO  - 10.1016/j.tca.2019.178337
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Radović, Ivana M. and Janković, Marija M. and Rajačić, Milica",
year = "2019",
abstract = "Thermal and kinetics behaviors of the low-rank coals from different annual periods (Kolubara (2015)/(2018) and TENT A (2015)/(2018)) during combustion process in air atmosphere, using simultaneous TGA-DTG-DTA-MS measurements were investigated. The FTIR spectroscopy was used to gain additional information on coals structures. Kolubara and TENT A coals from (2015)/(2018) annual periods show differences in reactivity, where the reason for this demeanor lies in differences in decomposition kinetics of these coals. The conclusions made on the basis of model-based analysis clearly indicate that differences in combustion reaction pathways (especially in transitions from primary to secondary combustion stages) arise from continual changes in physical structure of the coals. It was found that the mineral matter significantly influences on the reactivity of coal during combustion, where this is particularly pronounced for TENT A coal particles. © 2019 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques",
volume = "679",
pages = "178337",
doi = "10.1016/j.tca.2019.178337"
}

Janković, B. Ž., Manić, N. G., Radović, I. M., Janković, M. M.,& Rajačić, M.. (2019). Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques. in Thermochimica Acta, 679, 178337.
https://doi.org/10.1016/j.tca.2019.178337

Janković BŽ, Manić NG, Radović IM, Janković MM, Rajačić M. Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques. in Thermochimica Acta. 2019;679:178337.
doi:10.1016/j.tca.2019.178337 .

Janković, Bojan Ž., Manić, Nebojša G., Radović, Ivana M., Janković, Marija M., Rajačić, Milica, "Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques" in Thermochimica Acta, 679 (2019):178337,
https://doi.org/10.1016/j.tca.2019.178337 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Dodevski, Vladimir
AU  - Popović, Jasmina G.
AU  - Rusmirović, Jelena D.
AU  - Tošić, Miloš S.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0016236118317770
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7925
AB  - This paper describes the pyrolysis of Poplar fluff (from Populus alba) using on-line apparatus, and carbonization process at 850 °C using the fixed bed reactor. Characteristics of pyrolysis products were examined. Elemental and chemical analyses were shown that Poplar fluff has higher energy content characterized by increased content of fibrous structure (particularly cellulose). Independent parallel reactions model very well describes devolatilization process. It was found that increased amount of extractives can significantly affect on increased release of light gaseous products, but declining hydrocarbons, mostly the alkanes. Liquid product is mainly composed of phenolics, aldehydes, acids, esters and ketones. The carbonization process produces the great abundance of polycyclic aromatic hydrocarbons (PAH's), where naphthalene is the most abundant. Mechanism for PAH's formation was suggested. This study represents the first step in a much wider and more comprehensive way in thermal conversion processes of this type of fuel. © 2018 Elsevier Ltd
T2  - Fuel
T1  - Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study
VL  - 238
SP  - 111
EP  - 128
DO  - 10.1016/j.fuel.2018.10.064
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Dodevski, Vladimir and Popović, Jasmina G. and Rusmirović, Jelena D. and Tošić, Miloš S.",
year = "2019",
abstract = "This paper describes the pyrolysis of Poplar fluff (from Populus alba) using on-line apparatus, and carbonization process at 850 °C using the fixed bed reactor. Characteristics of pyrolysis products were examined. Elemental and chemical analyses were shown that Poplar fluff has higher energy content characterized by increased content of fibrous structure (particularly cellulose). Independent parallel reactions model very well describes devolatilization process. It was found that increased amount of extractives can significantly affect on increased release of light gaseous products, but declining hydrocarbons, mostly the alkanes. Liquid product is mainly composed of phenolics, aldehydes, acids, esters and ketones. The carbonization process produces the great abundance of polycyclic aromatic hydrocarbons (PAH's), where naphthalene is the most abundant. Mechanism for PAH's formation was suggested. This study represents the first step in a much wider and more comprehensive way in thermal conversion processes of this type of fuel. © 2018 Elsevier Ltd",
journal = "Fuel",
title = "Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study",
volume = "238",
pages = "111-128",
doi = "10.1016/j.fuel.2018.10.064"
}

Janković, B. Ž., Manić, N. G., Dodevski, V., Popović, J. G., Rusmirović, J. D.,& Tošić, M. S.. (2019). Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study. in Fuel, 238, 111-128.
https://doi.org/10.1016/j.fuel.2018.10.064

Janković BŽ, Manić NG, Dodevski V, Popović JG, Rusmirović JD, Tošić MS. Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study. in Fuel. 2019;238:111-128.
doi:10.1016/j.fuel.2018.10.064 .

Janković, Bojan Ž., Manić, Nebojša G., Dodevski, Vladimir, Popović, Jasmina G., Rusmirović, Jelena D., Tošić, Miloš S., "Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study" in Fuel, 238 (2019):111-128,
https://doi.org/10.1016/j.fuel.2018.10.064 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Vasić, Milica M.
AU  - Kisić, Danilo
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S002245961930177X
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8160
AB  - Two samples containing 2-line ferrihydrite and copper oxide were synthesized by coprecipitation method, via variation of Fe3+ and Cu2+ precursors milimolar ratio (3:1 and 3:3.1), while the other synthesis parameters were kept constant. Annealing treatment at 1100 °C resulted in the formation of c-CuFe2O4-CuO-α-Fe2O3 and c-CuFe2O4-CuO nanocomposites, respectively. A comparison of properties of the prepared samples was performed by XRD, FTIR and EPR measurements. Formation mechanism of the nanocomposites is discussed with a reference to the influence of Jahn-Teller effect in CuO phase on the final CuFe2O4 structure. For the first time, it is shown that the amount of Fe3+ precursor is of key importance for the size of CuFe2O4 nanoparticles, and enables preparation of c-CuFe2O4 nanoparticles of the same crystallite size (46 nm) in different nanocomposite materials. © 2019 Elsevier Inc.
T2  - Journal of Solid State Chemistry
T1  - Observation of c-CuFe2O4 nanoparticles of the same crystallite size in different nanocomposite materials: The influence of Fe3+ cations
VL  - 275
SP  - 187
EP  - 196
DO  - 10.1016/j.jssc.2019.04.007
ER  - 

@article{
author = "Nikolić, Violeta N. and Vasić, Milica M. and Kisić, Danilo",
year = "2019",
abstract = "Two samples containing 2-line ferrihydrite and copper oxide were synthesized by coprecipitation method, via variation of Fe3+ and Cu2+ precursors milimolar ratio (3:1 and 3:3.1), while the other synthesis parameters were kept constant. Annealing treatment at 1100 °C resulted in the formation of c-CuFe2O4-CuO-α-Fe2O3 and c-CuFe2O4-CuO nanocomposites, respectively. A comparison of properties of the prepared samples was performed by XRD, FTIR and EPR measurements. Formation mechanism of the nanocomposites is discussed with a reference to the influence of Jahn-Teller effect in CuO phase on the final CuFe2O4 structure. For the first time, it is shown that the amount of Fe3+ precursor is of key importance for the size of CuFe2O4 nanoparticles, and enables preparation of c-CuFe2O4 nanoparticles of the same crystallite size (46 nm) in different nanocomposite materials. © 2019 Elsevier Inc.",
journal = "Journal of Solid State Chemistry",
title = "Observation of c-CuFe2O4 nanoparticles of the same crystallite size in different nanocomposite materials: The influence of Fe3+ cations",
volume = "275",
pages = "187-196",
doi = "10.1016/j.jssc.2019.04.007"
}

Nikolić, V. N., Vasić, M. M.,& Kisić, D.. (2019). Observation of c-CuFe2O4 nanoparticles of the same crystallite size in different nanocomposite materials: The influence of Fe3+ cations. in Journal of Solid State Chemistry, 275, 187-196.
https://doi.org/10.1016/j.jssc.2019.04.007

Nikolić VN, Vasić MM, Kisić D. Observation of c-CuFe2O4 nanoparticles of the same crystallite size in different nanocomposite materials: The influence of Fe3+ cations. in Journal of Solid State Chemistry. 2019;275:187-196.
doi:10.1016/j.jssc.2019.04.007 .

Nikolić, Violeta N., Vasić, Milica M., Kisić, Danilo, "Observation of c-CuFe2O4 nanoparticles of the same crystallite size in different nanocomposite materials: The influence of Fe3+ cations" in Journal of Solid State Chemistry, 275 (2019):187-196,
https://doi.org/10.1016/j.jssc.2019.04.007 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Buchner, Richard
AU  - Plowas-Korus, Iwona
AU  - Pereiro, Ana B.
AU  - Amado-Gonzalez, Eliseo
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0040603118309274
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8011
AB  - Dielectric relaxation spectra of three representatives of the class of hydroxyethylammonium carboxylate protic ionic liquids (PILs), namely 2-hydroxyethylammonium formate [2-HEAF], 2-hydroxyethylammonium propionate [2-HEAP] and 2-hydroxyethylammonium butanoate [2-HEAB], were recorded over a wide frequency range (0.05 ≤ ν(GHz) ≤ 50) at 25 °C. The thermal decomposition kinetics of these ionic liquids derived from organic acids was studied by thermogravimetry (TG) using nonisothermal experiments. For the purpose of kinetic analysis, the thermal behavior of the samples was studied in the temperature interval from ambient temperature up to 420 °C at different heating rates (5, 10, 15 and 20 °C min−1). Isoconversional kinetic analysis was performed using Friedman's (FR) differential method and the integral Kissinger–Akahira–Sunose (KAS) method. The dependence of the apparent activation energy (E) on the conversion fraction (α) for the investigated decomposition processes was analyzed. It was found that the molecular structure of the involved anion significantly influences the dielectric properties of the studied PILs. It was also established that a change in the anion structure drastically affects the shape of the thermo-analytical curves. Among the considered PILs [2-HEAF] has the highest thermal stability. However, considering kinetic properties, certain deviations were observed and referred to hydrogen bonding development and steric impediment effects. © 2018 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid
VL  - 672
SP  - 43
EP  - 52
DO  - 10.1016/j.tca.2018.12.013
ER  - 

@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Buchner, Richard and Plowas-Korus, Iwona and Pereiro, Ana B. and Amado-Gonzalez, Eliseo",
year = "2019",
abstract = "Dielectric relaxation spectra of three representatives of the class of hydroxyethylammonium carboxylate protic ionic liquids (PILs), namely 2-hydroxyethylammonium formate [2-HEAF], 2-hydroxyethylammonium propionate [2-HEAP] and 2-hydroxyethylammonium butanoate [2-HEAB], were recorded over a wide frequency range (0.05 ≤ ν(GHz) ≤ 50) at 25 °C. The thermal decomposition kinetics of these ionic liquids derived from organic acids was studied by thermogravimetry (TG) using nonisothermal experiments. For the purpose of kinetic analysis, the thermal behavior of the samples was studied in the temperature interval from ambient temperature up to 420 °C at different heating rates (5, 10, 15 and 20 °C min−1). Isoconversional kinetic analysis was performed using Friedman's (FR) differential method and the integral Kissinger–Akahira–Sunose (KAS) method. The dependence of the apparent activation energy (E) on the conversion fraction (α) for the investigated decomposition processes was analyzed. It was found that the molecular structure of the involved anion significantly influences the dielectric properties of the studied PILs. It was also established that a change in the anion structure drastically affects the shape of the thermo-analytical curves. Among the considered PILs [2-HEAF] has the highest thermal stability. However, considering kinetic properties, certain deviations were observed and referred to hydrogen bonding development and steric impediment effects. © 2018 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid",
volume = "672",
pages = "43-52",
doi = "10.1016/j.tca.2018.12.013"
}

Janković, B. Ž., Manić, N. G., Buchner, R., Plowas-Korus, I., Pereiro, A. B.,& Amado-Gonzalez, E.. (2019). Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid. in Thermochimica Acta, 672, 43-52.
https://doi.org/10.1016/j.tca.2018.12.013

Janković BŽ, Manić NG, Buchner R, Plowas-Korus I, Pereiro AB, Amado-Gonzalez E. Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid. in Thermochimica Acta. 2019;672:43-52.
doi:10.1016/j.tca.2018.12.013 .

Janković, Bojan Ž., Manić, Nebojša G., Buchner, Richard, Plowas-Korus, Iwona, Pereiro, Ana B., Amado-Gonzalez, Eliseo, "Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid" in Thermochimica Acta, 672 (2019):43-52,
https://doi.org/10.1016/j.tca.2018.12.013 . .

TY  - JOUR
AU  - Đurović, Sanja
AU  - Dragičević, Vesna
AU  - Waisi, Hadi
AU  - Pagnacco, Maja C.
AU  - Luković, Nevena
AU  - Knežević-Jugović, Zorica
AU  - Nikolić, Bogdan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8679
AB  - Polyphenols present in different plant cell organelles increase the resistance of plants to various types of environmental stresses. We investigated the possibility of increasing the content of bioactive compounds in the seed of yellow soybean variety Laura. The soybean was treated during vegetation with five products based on plant extracts, on the assumption of enrichment of plants with various nutrients. Soybean flour extracts were screened spectrophotometrically for total phenolic content and antioxidant activity. The antioxidant activity was evaluated using three methods. The content of phenolic acids was determined by HPLC, and the raw protein content was estimated by the Kjeldahl method. Depending on the treatment, variations in the quantity of individual phenolic acids with up to 90% higher concentration as compared to the control were observed. Controlled usage of certain plant extracts can increase the concentration of the target group of bioactive compounds in the samples. The synergistic effect of proteins and phenolic compounds on the antioxidant activity of extracts was detected. The results of this study are not only important from the aspect of plant resistance to various types of stress, but also when considering soybean as a functional food. © 2019 by the Serbian Biological Society.
T2  - Archives of Biological Sciences
T1  - Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products
VL  - 71
IS  - 3
SP  - 425
EP  - 434
DO  - 10.2298/ABS190123024D
ER  - 

@article{
author = "Đurović, Sanja and Dragičević, Vesna and Waisi, Hadi and Pagnacco, Maja C. and Luković, Nevena and Knežević-Jugović, Zorica and Nikolić, Bogdan",
year = "2019",
abstract = "Polyphenols present in different plant cell organelles increase the resistance of plants to various types of environmental stresses. We investigated the possibility of increasing the content of bioactive compounds in the seed of yellow soybean variety Laura. The soybean was treated during vegetation with five products based on plant extracts, on the assumption of enrichment of plants with various nutrients. Soybean flour extracts were screened spectrophotometrically for total phenolic content and antioxidant activity. The antioxidant activity was evaluated using three methods. The content of phenolic acids was determined by HPLC, and the raw protein content was estimated by the Kjeldahl method. Depending on the treatment, variations in the quantity of individual phenolic acids with up to 90% higher concentration as compared to the control were observed. Controlled usage of certain plant extracts can increase the concentration of the target group of bioactive compounds in the samples. The synergistic effect of proteins and phenolic compounds on the antioxidant activity of extracts was detected. The results of this study are not only important from the aspect of plant resistance to various types of stress, but also when considering soybean as a functional food. © 2019 by the Serbian Biological Society.",
journal = "Archives of Biological Sciences",
title = "Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products",
volume = "71",
number = "3",
pages = "425-434",
doi = "10.2298/ABS190123024D"
}

Đurović, S., Dragičević, V., Waisi, H., Pagnacco, M. C., Luković, N., Knežević-Jugović, Z.,& Nikolić, B.. (2019). Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products. in Archives of Biological Sciences, 71(3), 425-434.
https://doi.org/10.2298/ABS190123024D

Đurović S, Dragičević V, Waisi H, Pagnacco MC, Luković N, Knežević-Jugović Z, Nikolić B. Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products. in Archives of Biological Sciences. 2019;71(3):425-434.
doi:10.2298/ABS190123024D .

Đurović, Sanja, Dragičević, Vesna, Waisi, Hadi, Pagnacco, Maja C., Luković, Nevena, Knežević-Jugović, Zorica, Nikolić, Bogdan, "Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products" in Archives of Biological Sciences, 71, no. 3 (2019):425-434,
https://doi.org/10.2298/ABS190123024D . .

TY  - JOUR
AU  - Mojović, Zorica D.
AU  - Novaković, Tatjana
AU  - Mojović, Miloš D.
AU  - Barudžija, Tanja
AU  - Mitrić, Miodrag
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8596
AB  - Alumina powders, pure and doped with nickel, were synthetized by sol-gel method and calcined at 500, 900 and 1100oC in order to obtain mesoporous structures with a high specific surface area, well adapTab. to catalytic application. The characterization of samples was performed by XRD, EPR spectroscopy and electrochemical impedance spectroscopy (EIS). XRD analysis showed that the addition of Ni2+, as well as the annealing temperature, affects the structural properties of the obtained composites. EPR analysis revealed the traces of Fe3+ impurities, the presence of oxy defects in alumina and Ni2+ in tetrahedral position for samples calcined at 1100oC. The impedance of the Nafion/alumina modified GCE depended on combined effect of porous structure and surface properties of alumina samples. The electrochemical behavior of a glassy carbon electrode modified with Ni (II)-doped aluminas was studied in 0.5 M NaOH solution, with and without methanol. The electrochemical activity of nickel-doped alumina composites was dictated by the amount of present NiO impurity.
T2  - Science of Sintering
T1  - Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function
VL  - 51
IS  - 3
SP  - 339
EP  - 351
DO  - 10.2298/SOS1903339M
ER  - 

@article{
author = "Mojović, Zorica D. and Novaković, Tatjana and Mojović, Miloš D. and Barudžija, Tanja and Mitrić, Miodrag",
year = "2019",
abstract = "Alumina powders, pure and doped with nickel, were synthetized by sol-gel method and calcined at 500, 900 and 1100oC in order to obtain mesoporous structures with a high specific surface area, well adapTab. to catalytic application. The characterization of samples was performed by XRD, EPR spectroscopy and electrochemical impedance spectroscopy (EIS). XRD analysis showed that the addition of Ni2+, as well as the annealing temperature, affects the structural properties of the obtained composites. EPR analysis revealed the traces of Fe3+ impurities, the presence of oxy defects in alumina and Ni2+ in tetrahedral position for samples calcined at 1100oC. The impedance of the Nafion/alumina modified GCE depended on combined effect of porous structure and surface properties of alumina samples. The electrochemical behavior of a glassy carbon electrode modified with Ni (II)-doped aluminas was studied in 0.5 M NaOH solution, with and without methanol. The electrochemical activity of nickel-doped alumina composites was dictated by the amount of present NiO impurity.",
journal = "Science of Sintering",
title = "Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function",
volume = "51",
number = "3",
pages = "339-351",
doi = "10.2298/SOS1903339M"
}

Mojović, Z. D., Novaković, T., Mojović, M. D., Barudžija, T.,& Mitrić, M.. (2019). Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function. in Science of Sintering, 51(3), 339-351.
https://doi.org/10.2298/SOS1903339M

Mojović ZD, Novaković T, Mojović MD, Barudžija T, Mitrić M. Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function. in Science of Sintering. 2019;51(3):339-351.
doi:10.2298/SOS1903339M .

Mojović, Zorica D., Novaković, Tatjana, Mojović, Miloš D., Barudžija, Tanja, Mitrić, Miodrag, "Electrochemical and structural properties of Ni(II)-alumina composites as an annealing temperature function" in Science of Sintering, 51, no. 3 (2019):339-351,
https://doi.org/10.2298/SOS1903339M . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Janković, Marija M.
AU  - Marinović-Cincović, Milena
AU  - Todorović, Dragana
AU  - Sarap, Nataša
PY  - 2018
UR  - http://link.springer.com/10.1007/s10973-018-7159-1
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7777
AB  - Kaolins are used in a multiplicity of industries because of unique physical and chemical properties. Relationships between thermal and radioactivity properties are discussed in its application as a building material. Super-fine kaolin powder with particle sizes about 30 mu m was analyzed. Simultaneous TGA/DTA analysis was performed on powder samples at various heating rates in an argon atmosphere. Based on investigated thermal properties, it was concluded that dehydroxylation process can vary depending on the characteristics of starting material. The maximum degree of the dehydroxylation (D (T)) was obtained at the lowest rate of heating (D (T) = 60.79% for 10 A degrees C min(-1)). With an increase in the heating rate, decline in D (T) value was observed. Based on comprehensive testing, it was identified that the degree of dehydroxylation does not drop below 50%. It was concluded that appointed experimental conditions seem sufficient admissible for obtaining degree of dehydroxylation (D (T)) higher than 50%. In order to safe use of kaolin as a building material from the standpoint of radiological safety, content of natural radionuclides was determined by gamma spectrometry.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermal analysis testing and natural radioactivity characterization of kaolin as building material
VL  - 133
IS  - 1
SP  - 481
EP  - 487
DO  - 10.1007/s10973-018-7159-1
ER  - 

@article{
author = "Janković, Bojan Ž. and Janković, Marija M. and Marinović-Cincović, Milena and Todorović, Dragana and Sarap, Nataša",
year = "2018",
abstract = "Kaolins are used in a multiplicity of industries because of unique physical and chemical properties. Relationships between thermal and radioactivity properties are discussed in its application as a building material. Super-fine kaolin powder with particle sizes about 30 mu m was analyzed. Simultaneous TGA/DTA analysis was performed on powder samples at various heating rates in an argon atmosphere. Based on investigated thermal properties, it was concluded that dehydroxylation process can vary depending on the characteristics of starting material. The maximum degree of the dehydroxylation (D (T)) was obtained at the lowest rate of heating (D (T) = 60.79% for 10 A degrees C min(-1)). With an increase in the heating rate, decline in D (T) value was observed. Based on comprehensive testing, it was identified that the degree of dehydroxylation does not drop below 50%. It was concluded that appointed experimental conditions seem sufficient admissible for obtaining degree of dehydroxylation (D (T)) higher than 50%. In order to safe use of kaolin as a building material from the standpoint of radiological safety, content of natural radionuclides was determined by gamma spectrometry.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermal analysis testing and natural radioactivity characterization of kaolin as building material",
volume = "133",
number = "1",
pages = "481-487",
doi = "10.1007/s10973-018-7159-1"
}

Janković, B. Ž., Janković, M. M., Marinović-Cincović, M., Todorović, D.,& Sarap, N.. (2018). Thermal analysis testing and natural radioactivity characterization of kaolin as building material. in Journal of Thermal Analysis and Calorimetry, 133(1), 481-487.
https://doi.org/10.1007/s10973-018-7159-1

Janković BŽ, Janković MM, Marinović-Cincović M, Todorović D, Sarap N. Thermal analysis testing and natural radioactivity characterization of kaolin as building material. in Journal of Thermal Analysis and Calorimetry. 2018;133(1):481-487.
doi:10.1007/s10973-018-7159-1 .

Janković, Bojan Ž., Janković, Marija M., Marinović-Cincović, Milena, Todorović, Dragana, Sarap, Nataša, "Thermal analysis testing and natural radioactivity characterization of kaolin as building material" in Journal of Thermal Analysis and Calorimetry, 133, no. 1 (2018):481-487,
https://doi.org/10.1007/s10973-018-7159-1 . .