The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers
Аутори
Ivanović, Marija M.Nenadović, Snežana S.
Pavlović, Vera P.
Radović, Ivona R.
Kijevčanin, Mirjana Lj.
Pavlović, Vladimir B.
Kljajević, Ljiljana M.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 °C for the process of geopolymerization. Mixtures of Na2SiO3and NaOH of different molar concentrations (from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentrationalso shows the highest values of all thermodynamic parameters.Metakaolin, obtained by calcination of kaolin at 750 °C, was used as the starting material.The samples were characterized by X-ray diffraction (XRD),FTIR and Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process, the changes in the phonon spectrum were confirmed. The different concentra-tions of activators do not notably change the Si/Al ratio.
Кључне речи:
geopolymers / density / viscosity / speed of sound / refractive index / FTIR / Raman spectroscopyИзвор:
Macedonian Journal of Chemistry and Chemical Engineering, 2021, 40, 1, 99-Финансирање / пројекти:
- Ministry of Education, Science and Technological Development of the Republic of Serbia
DOI: 10.20450/mjcce.2021.2127
ISSN: 1857-5552
WoS: 000681515600011
Scopus: 2-s2.0-85109128128
Колекције
Институција/група
VinčaTY - JOUR AU - Ivanović, Marija M. AU - Nenadović, Snežana S. AU - Pavlović, Vera P. AU - Radović, Ivona R. AU - Kijevčanin, Mirjana Lj. AU - Pavlović, Vladimir B. AU - Kljajević, Ljiljana M. PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9866 AB - Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 °C for the process of geopolymerization. Mixtures of Na2SiO3and NaOH of different molar concentrations (from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentrationalso shows the highest values of all thermodynamic parameters.Metakaolin, obtained by calcination of kaolin at 750 °C, was used as the starting material.The samples were characterized by X-ray diffraction (XRD),FTIR and Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process, the changes in the phonon spectrum were confirmed. The different concentra-tions of activators do not notably change the Si/Al ratio. T2 - Macedonian Journal of Chemistry and Chemical Engineering T1 - The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers VL - 40 IS - 1 SP - 99 DO - 10.20450/mjcce.2021.2127 ER -
@article{ author = "Ivanović, Marija M. and Nenadović, Snežana S. and Pavlović, Vera P. and Radović, Ivona R. and Kijevčanin, Mirjana Lj. and Pavlović, Vladimir B. and Kljajević, Ljiljana M.", year = "2021", abstract = "Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 °C for the process of geopolymerization. Mixtures of Na2SiO3and NaOH of different molar concentrations (from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentrationalso shows the highest values of all thermodynamic parameters.Metakaolin, obtained by calcination of kaolin at 750 °C, was used as the starting material.The samples were characterized by X-ray diffraction (XRD),FTIR and Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process, the changes in the phonon spectrum were confirmed. The different concentra-tions of activators do not notably change the Si/Al ratio.", journal = "Macedonian Journal of Chemistry and Chemical Engineering", title = "The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers", volume = "40", number = "1", pages = "99", doi = "10.20450/mjcce.2021.2127" }
Ivanović, M. M., Nenadović, S. S., Pavlović, V. P., Radović, I. R., Kijevčanin, M. Lj., Pavlović, V. B.,& Kljajević, L. M.. (2021). The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering, 40(1), 99. https://doi.org/10.20450/mjcce.2021.2127
Ivanović MM, Nenadović SS, Pavlović VP, Radović IR, Kijevčanin ML, Pavlović VB, Kljajević LM. The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering. 2021;40(1):99. doi:10.20450/mjcce.2021.2127 .
Ivanović, Marija M., Nenadović, Snežana S., Pavlović, Vera P., Radović, Ivona R., Kijevčanin, Mirjana Lj., Pavlović, Vladimir B., Kljajević, Ljiljana M., "The influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers" in Macedonian Journal of Chemistry and Chemical Engineering, 40, no. 1 (2021):99, https://doi.org/10.20450/mjcce.2021.2127 . .