Kinetic Regularities of the Early Stages of Sol-Gel Process in Tetraethoxysilane-Based Systems

Iryna Yevchuk1, Oksana Demchyna1, Volodymyr Kopylets2, Zenoviya Koval3 and Hanna Romaniuk3
Affiliation: 
1 Department of Physico-Chemistry of Combustible Minerals L.M. Lytvynenko Institute of Physico-organic Chemistry and Coal Chemistry NAS of Ukraine 3a, Naukova str., 79053 Lviv, Ukraine; jevchuk@mail.ru 2 H.V. Karpenko Physico-Mechanical Institute NAS of Ukraine 5, Naukova str., 79060 Lviv, Ukraine; kornii@imp.lviv.ua 3 Lviv Polytechnic National University 12, S. Bandera str., 79013 Lviv, Ukraine; groman@polynet.lviv.ua
DOI: 
https://doi.org/10.23939/chcht08.02.147
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Abstract: 
Kinetic peculiarities of the early stages of the processes of acid-catalyzed hydrolysis and condensation in sol-gel systems tetraethoxysilane (TEOS)–ethanol–water have been investigated by gas chromatography. Kinetic parameters of the process, evaluated using quantum-chemical calculations, satisfactorilly coincide with the ones determined experimentally.
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