Influence of boric acid on aging of freshly prepared tetraethoxysilane-based gels

Autor:	M. P. Semov, V. I. Rakhimov, O. V. Rakhimova
Rok vydání:	2010
Předmět:	Ammonium molybdate Gel point Condensation polymer Silicon General Chemical Engineering Inorganic chemistry chemistry.chemical_element General Chemistry Molybdate Boric acid Reaction rate chemistry.chemical_compound Hydrolysis chemistry
Zdroj:	Russian Journal of Applied Chemistry. 83:214-218
ISSN:	1608-3296 1070-4272
DOI:	10.1134/s1070427210020060
Popis:	The technique for kinetic examination of polycondensation of silicon alkoxides, which allows determining the rate of reaction between ammonium molybdate and various associates of silica for systems in which hydrolysis proceeds, was modified to examine similar systems after the gel point. Aging of freshly prepared tetraethoxysilane-based gels was for the first time studied spectrophotometrically as influenced by boric acid additions. The proportions of various molecular species of silica in the examined systems at different times after the gel point were determined in terms of the kinetic model of the molybdate reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a5662c8fa2e925c992cee9f5ea38255d https://doi.org/10.1134/s1070427210020060 Zobrazit plný text záznamu Full text from SpringerLink