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Monophasic Pre-Mullite Gels Prepared by a Nonhydrolytic Process

Published online by Cambridge University Press:  21 February 2011

Sylvie Acosta ,
Robert J.P. Corriu ,
Dominique Leclercq ,
P. Hubert Mutin  and
Andre Vioux
Sylvie Acosta
Affiliation:
Université de Montpellier II, Laboratoire Mixte CNRS / Rhône-Poulenc, case 007, F34095 Montpellier Cedex 05, France
Robert J.P. Corriu
Affiliation:
Université de Montpellier II, Laboratoire Mixte CNRS / Rhône-Poulenc, case 007, F34095 Montpellier Cedex 05, France
Dominique Leclercq
Affiliation:
Université de Montpellier II, Laboratoire Mixte CNRS / Rhône-Poulenc, case 007, F34095 Montpellier Cedex 05, France
P. Hubert Mutin
Affiliation:
Université de Montpellier II, Laboratoire Mixte CNRS / Rhône-Poulenc, case 007, F34095 Montpellier Cedex 05, France
Andre Vioux
Affiliation:
Université de Montpellier II, Laboratoire Mixte CNRS / Rhône-Poulenc, case 007, F34095 Montpellier Cedex 05, France
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Abstract

A nonhydrolytic sol-gel route to aluminosilicates is proposed which avoids the problems associated with different hydrolysis rates for the precursors. Two pre-mullite gels (Al2O3/SiO2=3/2) were prepared in two different ways. The conversion to mullite was studied as a probe for chemical homogeneity. The results indicate that a monophasic precursor (i.e. homogeneous at the atomic level) may be easily obtained by etherolysis of a mixture of SiCl4 and AlCl3.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 345
Copyright
Copyright © Materials Research Society 1998

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References

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