Silica-zirconia monoliths from gels |
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| Authors: | J P Pirard P Petit A Mohsine B Michaux F Noville A J Lecloux |
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| Institution: | (1) Institut de Chimie, Université de Liège, B 4000 Liege, Belgium;(2) Solvay Deutschland, D 3000 Hannover, Germany |
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| Abstract: | Zirconium propoxide and tetraethylorthosilicate were hydrolyzed in methoxyethanol which acts as stabilizer of zirconium and in presence of formamide or dimethylformamide as Drying Control Chemical Additives in order to obtain zirconia silica gels. The gels were dried at 70°C to get monolithic xerogels. The influence of zirconium content and DCCA on texture was determined. The evolution of these xerogels was investigated as a function of temperature between 70°C and 1000°C by thermogravimetry, differential scanning calorimetry, I.R. spectroscopy and R.X. diffractometry. |
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| Keywords: | gels silica zirconia monoliths DCCA methoxyethanol |
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