The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers
2021
Аутори
Ivanović, MarijaNenadović, Snežana S.
Pavlović, Vera P.
Radović, Ivona
Kijevčanin, Mirjana
Pavlović, Vladimir B.
Kljajević, Ljiljana
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 degrees C for the process of geopolymerization. Mixtures of Na2SiO3 and NaOH of different molar concentrations ( from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentration also shows the highest values of all thermodynamic parameters. Metakaolin, obtained by calcination of kaolin at 750 degrees 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 concentrations of activators do not notably change the Si/Al ratio.
Кључне речи:
viscosity / speed of sound / refractive index / Raman spectroscopy / geopolymer / FTIR / densityИзвор:
Macedonian Journal of Chemistry and Chemical Engineering, 2021, 40, 1, 107-117Издавач:
- Soc Chemists Technologists Madeconia, Skopje
Финансирање / пројекти:
- Ministry of Education, Science and Technological Development of Republic of Serbia
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200105 (Универзитет у Београду, Машински факултет) (RS-MESTD-inst-2020-200105)
DOI: 10.20450/mjcce.2021.2127
ISSN: 1857-5552
WoS: 000681515600011
Scopus: 2-s2.0-85109128128
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Ivanović, Marija AU - Nenadović, Snežana S. AU - Pavlović, Vera P. AU - Radović, Ivona AU - Kijevčanin, Mirjana AU - Pavlović, Vladimir B. AU - Kljajević, Ljiljana PY - 2021 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3566 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 degrees C for the process of geopolymerization. Mixtures of Na2SiO3 and NaOH of different molar concentrations ( from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentration also shows the highest values of all thermodynamic parameters. Metakaolin, obtained by calcination of kaolin at 750 degrees 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 concentrations of activators do not notably change the Si/Al ratio. PB - Soc Chemists Technologists Madeconia, Skopje T2 - Macedonian Journal of Chemistry and Chemical Engineering T1 - The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers EP - 117 IS - 1 SP - 107 VL - 40 DO - 10.20450/mjcce.2021.2127 ER -
@article{ author = "Ivanović, Marija and Nenadović, Snežana S. and Pavlović, Vera P. and Radović, Ivona and Kijevčanin, Mirjana and Pavlović, Vladimir B. and Kljajević, Ljiljana", 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 degrees C for the process of geopolymerization. Mixtures of Na2SiO3 and NaOH of different molar concentrations ( from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentration also shows the highest values of all thermodynamic parameters. Metakaolin, obtained by calcination of kaolin at 750 degrees 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 concentrations of activators do not notably change the Si/Al ratio.", publisher = "Soc Chemists Technologists Madeconia, Skopje", journal = "Macedonian Journal of Chemistry and Chemical Engineering", title = "The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers", pages = "117-107", number = "1", volume = "40", doi = "10.20450/mjcce.2021.2127" }
Ivanović, M., Nenadović, S. S., Pavlović, V. P., Radović, I., Kijevčanin, M., Pavlović, V. B.,& Kljajević, L.. (2021). The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering Soc Chemists Technologists Madeconia, Skopje., 40(1), 107-117. https://doi.org/10.20450/mjcce.2021.2127
Ivanović M, Nenadović SS, Pavlović VP, Radović I, Kijevčanin M, Pavlović VB, Kljajević L. The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering. 2021;40(1):107-117. doi:10.20450/mjcce.2021.2127 .
Ivanović, Marija, Nenadović, Snežana S., Pavlović, Vera P., Radović, Ivona, Kijevčanin, Mirjana, Pavlović, Vladimir B., Kljajević, Ljiljana, "The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers" in Macedonian Journal of Chemistry and Chemical Engineering, 40, no. 1 (2021):107-117, https://doi.org/10.20450/mjcce.2021.2127 . .