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
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Characterization of silylated Ti-grafted HMS catalyst and its excellent epoxidation performance
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
نویسندگان
, , , , , , , ,