TY  - JOUR
AU  - Novaković, Tatjana
AU  - Rožić, Ljiljana S.
AU  - Petrović, Srđan P.
AU  - Vuković, Zorica M.
AU  - Mitrić, Miodrag
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/869
AB  - A statistical design was used to investigate the effect of various processing conditions on the structure of sol-gel derived Mg(II) doped alumina. Six process variables were selected based on the Plackett-Burman design: concentration of magnesium nitrate, time and temperature of alcohol evaporation, temperature and time of annealing and heating rate were changed at two levels. For every set of conditions, samples with different specific surface area and degree of crystallinity were obtained. Analysis of the results showed that the annealing temperature, heating rate and concentration of magnesium nitrate were the main factors affecting the average crystallite size of the predominant alumina phase. In the case of the specific surface area, two of selected six variables had pronounced effects; however, the temperature of annealing was more effective than others. The present results showed that the proposed model that uses crystallite size as a response variable is preferable to other research.
T2  - Journal of the Serbian Chemical Society
T1  - Study of the effect of Mg(II) addition and the annealing conditions on the structure of mesoporous aluminum oxide using Plackett-Burman design
VL  - 80
IS  - 12
SP  - 1529
EP  - 1540
DO  - 10.2298/JSC141113056N
ER  - 

@article{
author = "Novaković, Tatjana and Rožić, Ljiljana S. and Petrović, Srđan P. and Vuković, Zorica M. and Mitrić, Miodrag",
year = "2015",
abstract = "A statistical design was used to investigate the effect of various processing conditions on the structure of sol-gel derived Mg(II) doped alumina. Six process variables were selected based on the Plackett-Burman design: concentration of magnesium nitrate, time and temperature of alcohol evaporation, temperature and time of annealing and heating rate were changed at two levels. For every set of conditions, samples with different specific surface area and degree of crystallinity were obtained. Analysis of the results showed that the annealing temperature, heating rate and concentration of magnesium nitrate were the main factors affecting the average crystallite size of the predominant alumina phase. In the case of the specific surface area, two of selected six variables had pronounced effects; however, the temperature of annealing was more effective than others. The present results showed that the proposed model that uses crystallite size as a response variable is preferable to other research.",
journal = "Journal of the Serbian Chemical Society",
title = "Study of the effect of Mg(II) addition and the annealing conditions on the structure of mesoporous aluminum oxide using Plackett-Burman design",
volume = "80",
number = "12",
pages = "1529-1540",
doi = "10.2298/JSC141113056N"
}

Novaković, T., Rožić, L. S., Petrović, S. P., Vuković, Z. M.,& Mitrić, M.. (2015). Study of the effect of Mg(II) addition and the annealing conditions on the structure of mesoporous aluminum oxide using Plackett-Burman design. in Journal of the Serbian Chemical Society, 80(12), 1529-1540.
https://doi.org/10.2298/JSC141113056N

Novaković T, Rožić LS, Petrović SP, Vuković ZM, Mitrić M. Study of the effect of Mg(II) addition and the annealing conditions on the structure of mesoporous aluminum oxide using Plackett-Burman design. in Journal of the Serbian Chemical Society. 2015;80(12):1529-1540.
doi:10.2298/JSC141113056N .

Novaković, Tatjana, Rožić, Ljiljana S., Petrović, Srđan P., Vuković, Zorica M., Mitrić, Miodrag, "Study of the effect of Mg(II) addition and the annealing conditions on the structure of mesoporous aluminum oxide using Plackett-Burman design" in Journal of the Serbian Chemical Society, 80, no. 12 (2015):1529-1540,
https://doi.org/10.2298/JSC141113056N . .

TY  - JOUR
AU  - Mojovic, Zorica
AU  - Rozic, Ljiljana
AU  - Novaković, Tatjana
AU  - Vuković, Zorica M.
AU  - Petrović, Srđan P.
AU  - Randelovic, Danijela
AU  - Mitrić, Miodrag
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5084
AB  - Electrochemical behavior of 12-tungstophosphoric acid (HPW)/acid-activated bentonite (AAB) powders with various loadings of HPW was investigated. The physicochemical properties of the prepared powders were examined by X-ray powder diffraction, nitrogen adsorption-desorption isotherms, atomic force microscopy and cyclic voltammetry measurements. The results indicated that the prepared powders are composed mainly of oriented domains of large rock blocks, probably resulting from a preferable deposition of bentonite particles having a face-to-face interaction. The particles had a mainly disordered mesoporous structure with a pore volume that varied according to the pore size in the range of 2-50 nm. In addition, the particles had crystallite size between 4.9 and 9.0 nm. The electrocatalytic activities of prepared HPW/AAB electrodes were studied in the oxidation of NO2- and the results revealed that the electrodes possessed relatively higher nitrite oxidation currents than AAB electrode. The best electroactivity was observed for HPW3/AAB electrode (AAB + + 20 wt % HPW) and the limit of detection (3 sigma) was determined as 8 mu M.
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - Electrochemical Behavior of H3pw12o40/Acid-Activated Bentonite Powders
VL  - 18
IS  - 2
SP  - 329
EP  - 338
DO  - 10.2298/CICEQ110907009M
ER  - 

@article{
author = "Mojovic, Zorica and Rozic, Ljiljana and Novaković, Tatjana and Vuković, Zorica M. and Petrović, Srđan P. and Randelovic, Danijela and Mitrić, Miodrag",
year = "2012",
abstract = "Electrochemical behavior of 12-tungstophosphoric acid (HPW)/acid-activated bentonite (AAB) powders with various loadings of HPW was investigated. The physicochemical properties of the prepared powders were examined by X-ray powder diffraction, nitrogen adsorption-desorption isotherms, atomic force microscopy and cyclic voltammetry measurements. The results indicated that the prepared powders are composed mainly of oriented domains of large rock blocks, probably resulting from a preferable deposition of bentonite particles having a face-to-face interaction. The particles had a mainly disordered mesoporous structure with a pore volume that varied according to the pore size in the range of 2-50 nm. In addition, the particles had crystallite size between 4.9 and 9.0 nm. The electrocatalytic activities of prepared HPW/AAB electrodes were studied in the oxidation of NO2- and the results revealed that the electrodes possessed relatively higher nitrite oxidation currents than AAB electrode. The best electroactivity was observed for HPW3/AAB electrode (AAB + + 20 wt % HPW) and the limit of detection (3 sigma) was determined as 8 mu M.",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "Electrochemical Behavior of H3pw12o40/Acid-Activated Bentonite Powders",
volume = "18",
number = "2",
pages = "329-338",
doi = "10.2298/CICEQ110907009M"
}

Mojovic, Z., Rozic, L., Novaković, T., Vuković, Z. M., Petrović, S. P., Randelovic, D.,& Mitrić, M.. (2012). Electrochemical Behavior of H3pw12o40/Acid-Activated Bentonite Powders. in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 18(2), 329-338.
https://doi.org/10.2298/CICEQ110907009M

Mojovic Z, Rozic L, Novaković T, Vuković ZM, Petrović SP, Randelovic D, Mitrić M. Electrochemical Behavior of H3pw12o40/Acid-Activated Bentonite Powders. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2012;18(2):329-338.
doi:10.2298/CICEQ110907009M .

Mojovic, Zorica, Rozic, Ljiljana, Novaković, Tatjana, Vuković, Zorica M., Petrović, Srđan P., Randelovic, Danijela, Mitrić, Miodrag, "Electrochemical Behavior of H3pw12o40/Acid-Activated Bentonite Powders" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 18, no. 2 (2012):329-338,
https://doi.org/10.2298/CICEQ110907009M . .