Textural Properties and Thermal Stability of Silica-Zirconia Aerogels |
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| Authors: | R Pirard D Bonhomme S Kolibos JP Pirard A Lecloux |
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| Institution: | (1) Laboratoire de Génie Chimique et de Chimie Industrielle, Institut de Chimie au Sart-Tilman (B6), Université de Liège, B-4000 Liège, Belgium;(2) Solvay Deutschland, D-30173 Hannover, Germany |
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| Abstract: | A solution of zirconium propoxide stabilized by methoxyethanol is mixed 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 modifications of the aerogel porous texture as a function of chemical composition and thermal treatment
are investigated using adsorption-desorption isotherms analysis, mercury porosimetry, electron-microscopy and X-ray diffraction. |
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| Keywords: | aerogel silica-zirconia synthesis sintering pore distribution |
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