Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9778202 | Journal of Non-Crystalline Solids | 2005 | 7 Pages |
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 12Â 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.
Related Topics
Physical Sciences and Engineering
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Authors
Ye Zhang, Ji Man Kim, Dong Wu, Yuhan Sun, Dongyuan Zhao, Shaoyi Peng,