TEXTURAL PROPERTIES AND THERMAL-STABILITY OF SILICA-ZIRCONIA AEROGELS

Authors
PIRARD R BONHOMME D KOLIBOS S PIRARD JP LECLOUX A
Citation
R. Pirard et al., TEXTURAL PROPERTIES AND THERMAL-STABILITY OF SILICA-ZIRCONIA AEROGELS, JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 8(1-3), 1997, pp. 831-836
Citations number
14
Categorie Soggetti
Material Science
Journal title
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY → ACNP
ISSN journal
09280707
Volume
8
Issue
1-3
Year of publication
1997
Pages
831 - 836
Database
ISI
SICI code
0928-0707(1997)8:1-3<831:TPATOS>2.0.ZU;2-R
Abstract
A solution of zirconium propoxide stabilized by methoxyethanol is mixe d with silicon ethoxide in ethanol and hydrolyzed by small amounts of neutral, basified or acidified water. The obtained silica-zirconia gel is dried in supercritical conditions, yielding an aerogel. The modifi cations of the aerogel porous texture as a function of chemical compos ition and thermal treatment are investigated using adsorption-desorpti on isotherms analysis, mercury porosimetry, electron-microscopy and X- ray diffraction.