کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1258662 | 971629 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of silylated Ti-grafted HMS catalyst and its excellent epoxidation performance
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
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چکیده انگلیسی
Silylated Ti-grafted hexagonal mesoporous silica (HMS) catalyst was prepared by the chemical vapor deposition (CVD) using TiCl4 as titanium source and hexamethyldisilazane (HMDSZ) as silylating agent. The samples were characterized by XRD, N2-adsorption, FTIR, 29Si NMR, DR UV–vis, and evaluated by epoxidation of styrene, propylene, cyclohexene, and 1-hexene with cumene hydroperoxide (CHP) as oxidant, respectively. It is revealed that the catalyst possesses typical mesoporous structure, high hydrophobicity and highly dispersed tetracoordinated titanium sites and hence exhibits excellent performance in epoxidation of olefins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Chemical Letters - Volume 18, Issue 5, May 2007, Pages 591–594
Journal: Chinese Chemical Letters - Volume 18, Issue 5, May 2007, Pages 591–594
نویسندگان
Xue Feng Li, Huan Xin Gao, Guo Jie Jin, Lin Ding, Lu Chen, Hong Yun Yang, Xin He, Qing Ling Chen,