Article ID Journal Published Year Pages File Type
9778202 Journal of Non-Crystalline Solids 2005 7 Pages PDF
Abstract
Methyl-modified silica materials with dual mesopore size distribution have been successfully obtained by co-condensation of methyltriethoxysilane and tetraethylorthosilicate via sol-gel method. Non-ionic surfactant, alkyl polyethylene oxide CH3(CH2)12(EO)9, is used as the structure-directing agent, which can be easily removed by solvent extraction. The materials thus obtained exhibit two kinds of mesopores: framework mesopore and textural mesopore with mean pore sizes of about 2.2 and 12 nm, respectively. The presence of methyl groups in the framework is proved by FT-IR, TGA and 29Si MAS NMR measurements. The effect of the methyl groups on adsorption properties for water and benzene has also been investigated in the present work.
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Physical Sciences and Engineering Materials Science Ceramics and Composites
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