Highly Active/Selective Heterogeneous Catalyst Co/Ts-1 for Epoxidation of Styrene by Molecular Oxygen: Effects of Catalyst Preparation Conditions and Reaction Conditions on the Reaction
详细信息 查看全文
- 作者：Jian Jiang ; Rong Li ; Huanling Wang ; Yunfeng Zheng ; Hangning Chen and Jiantai Ma
- 关键词：Styrene epoxidation ; Molecular oxygen ; Co/TS ; 1 ; Effect factors
- 刊名：Catalysis Letters
- 出版年：2008
- 出版时间：January, 2008
- 年：2008
- 卷：120
- 期：3-4
- 页码：221-228
- 全文大小：357.4 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Catalysis
Physical Chemistry
Industrial Chemistry and Chemical Engineering
Pharmacy - 出版者：Springer Netherlands
- ISSN：1572-879X
文摘
In the study, highly active/selective heterogeneous catalyst Co/TS-1 has been prepared successfully. The catalyst was characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), diffuse reflectance UV–visible(DR UV–vis) and transmission electron microscopy (TEM). Liquid-phase catalytic epoxidation of styrene to styrene epoxide by molecular oxygen was carried out at atmospheric pressure in the presence of Co/TS-1 catalyst. Sacrificial co-reductant or other promoted reagent such as t-butyl hydroperoxide (TBHP) was not added in the reaction system. A 94.5 mol% conversion of styrene with an epoxide selectivity of 74.3 mol% was attained after 3.5 h reaction. It is noteworthy that there is a synergy between the Co and the Ti in the catalyst in the liquid phase epoxidation of styrene.