کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9778202 | 1510574 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sol-gel synthesis of methyl-modified mesoporous materials with dual porosity
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 8â9, 1 April 2005, Pages 777-783
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 8â9, 1 April 2005, Pages 777-783
نویسندگان
Ye Zhang, Ji Man Kim, Dong Wu, Yuhan Sun, Dongyuan Zhao, Shaoyi Peng,