A novel titanosilicate with MWW structure: Highly effective liquid-phase ammoximation of cyclohexanone

被引：85
|
作者：
Song, F
Liu, YM
Wu, HH
He, MY
Wu, P
Tatsumi, T
机构：
[1] E China Normal Univ, Dept Chem, Shaghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
[2] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
来源：
JOURNAL OF CATALYSIS | 2006年 / 237卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ti-MWW; TS-1; titanosilicate; liquid-phase ammoximation; cyclohexanone oxime;
D O I：
10.1016/j.jcat.2005.11.018
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The liquid-phase ammoximation of cyclohexanone with ammonia and hydrogen peroxide was conducted over Ti-MWW. Ti-MWW is capable of giving both cyclohexanone conversion and oxime Selectivity > 99% under optimum reaction conditions. It is a highly active, selective, and reusable catalyst for the synthesis of cyclohexanone oxime in the presence of water. In comparison to other titanosilicates, Ti-MWW shows much higher catalytic activity, even superior to that of TS-1. The catalytic performance of Ti-MWW depends greatly on the operating conditions of the reaction, especially the method of adding Substrates. The reason why the method of adding Substrates Plays Such an important role in the ammoximation of ketones or aldehydes over Ti-MWW was investigated after a detailed evaluation of the reaction mechanism. (c) 2005 Elsevier Inc. All rights reserved.
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页码：359 / 367
页数：9
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