Enhancement of Alkene Epoxidation Activity of Titanosilicates by Gas-Phase Ammonia Modification

被引：7

作者：

Zhang Liyan ^{[1
]}

Xu Le ^{[1
]}

Sun Jingjing ^{[1
]}

Jiang Jingang ^{[1
]}

Liu Yueming ^{[1
]}

Wu Haihong ^{[1
]}

Wu Peng ^{[1
]}

机构：

[1] E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

来源：

CHINESE JOURNAL OF CHEMISTRY | 2012年 / 30卷 / 09期

基金：

中国国家自然科学基金;

关键词：

titanosilicates; Ti-MWW; epoxidation; ammonification; ammonia; MOLECULAR-SIEVE; HYDROTHERMAL SYNTHESIS; MESOPOROUS MATERIALS; HYDROGEN-PEROXIDE; NITRIDED ZEOLITES; MWW STRUCTURE; TITANIUM; AMMOXIMATION; SELECTIVITY; NITRIDATION;

D O I：

10.1002/cjoc.201200637

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel ammonia-treated titanosilicates have been prepared by heating the samples of Ti-MWW, TS-1 and Ti-Beta under pure ammonia gas flow at 673 K for a period of time. The ammonia modification improved their catalytic performance in liquid-phase oxidations. Especially, the catalytic activities of ammonified Ti-MWW, N-Ti-MWW, were enhanced greatly in the epoxidation of 1-hexene with H2O2. The reason that the ammonia treatment played such an important role in post-modification of titanosilicate was investigated in details. In comparison to the parent Ti-MWW catalyst, N-Ti-MMW was more robust and produced less coke in oxidation reactions.

引用

页码：2205 / 2211

页数：7

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