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

Influence of boric acid on aging of freshly prepared tetraethoxysilane-based gels 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

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

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Publisher
Springer Journals
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Chemistry; Industrial Chemistry/Chemical Engineering; Chemistry/Food Science, general
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427210020060
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Mar 26, 2010

References

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