Synthesis and Characterization of Porous Silica-Alumina Xerogels |
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| Authors: | Van Cantfort O Abid A Michaux B Heinrichs B Pirard R Pirard JP Lecloux AJ |
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| Institution: | (1) Laboratoire de Chimie Industrielle et de Génie chimique, Institut de Chimie au Sart Tilman (B6a), Université de Liège, B-4000 Liège, Belgium;(2) Solvay Deutschland, D-30173 Hannover, Germany |
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| Abstract: | Porous silica-alumina xerogels are synthesized through two methods, which differ by the aluminium precursor: aluminium tri-secbutoxide
and aluminium nitrate nonahydrate. The silicium precursor is tetraethylorthosilicate. The porous texture is studied by nitrogen
adsorption-desorption isotherms. It is found that the porous texture mainly depends on one parameter for each preparation
method: hydrolysis catalyst in one case and aluminium content in the other case. |
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| Keywords: | silica-alumina gel synthesis porous texture nitrogen adsorption-desorption isotherms |
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