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Characterization Of Partially Condensed Silica Formed From The Partial Hydrolysis Of Tmos

Published online by Cambridge University Press:  28 February 2011

T.M. Tillotson  and
L.W. Hrubesh
T.M. Tillotson
Affiliation:
Department Of Chemistry & Material Science, Lawrence Livermore National Laboratory, Livermore, CA 94550
L.W. Hrubesh
Affiliation:
Department Of Chemistry & Material Science, Lawrence Livermore National Laboratory, Livermore, CA 94550
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Abstract

A stable mixture of partially condensed polysilicates is formed from the substoichiometric, acid catalysed hydrolysis of tetramethoxysilane [Si(OCH3)4] and the removal of the reaction- generated methanol by distillation. This mixture has been used as a precursor to make silica aerogels that show microstructural differences from base catalysed TMOS aerogels. In this paper, we report the analysis of this mixture for a determination of the type and distribution of the polysilicate species formed, and we include measurements of some physical properties of this fluid.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 180: Symposium A – Better Ceramics Through Chemistry IV , 1990 , 309
Copyright
Copyright © Materials Research Society 1990

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References

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