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Periodic Mesoporous SiCO Glasses with Cubic Symmetry Stable at 1000°C

Published online by Cambridge University Press:  10 February 2011

Raphaël Blum
Affiliation:
Laboratoire de Chimie de laMatière Condensée, UPMC, Paris, France.
Valérie Goletto
Affiliation:
Laboratoire de Chimie de laMatière Condensée, UPMC, Paris, France.
Bérangére Toury
Affiliation:
Laboratoire de Chimie de laMatière Condensée, UPMC, Paris, France.
Florence Babonneau
Affiliation:
Laboratoire de Chimie de laMatière Condensée, UPMC, Paris, France.
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Abstract

A periodic mesoporous organosilica (PMO) with cubic Pm3n structure has been prepared from bis(trimethoxysilyl)ethane and cetytriethylammonium chloride. The sample has been heat treated under argon up to 1000°C, and the pyrolysis intermediates were analysed by X-ray diffraction using synchrotron radiation, multinuclear solid state NMR (29Si, 13C and 1H) and N2 adsorption-desorption experiments. The cubic Pm3n structure is retained after pyrolysis at 1000°C. The sample is a SiCO glass with mixed SiCxO4-x units (x = 0, 1, 2) and a very large surface area of 730 m2/g.

Type
Research Article
Copyright
Copyright © Materials Research Society 2003

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