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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.

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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