Alkali promoted selective epoxidation of styrene to styrene oxide using TS-1 catalyst

被引：48

作者：

Rode, CV

Nehete, UN

Dongare, MK ^{[1
]}

机构：

[1] Natl Chem Lab, Catalysis Div, Pune 411008, Maharashtra, India

[2] Natl Chem Lab, Homogeneous Catalysis Div, Pune 411008, Maharashtra, India

来源：

CATALYSIS COMMUNICATIONS | 2003年 / 4卷 / 08期

关键词：

D O I：

10.1016/S1566-7367(03)00088-8

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 epoxidation of styrene was carried out over titanium silicalite (TS-1) and an alkali (sodium hydroxide) in the reaction medium. This system gave a very high TOF (>200 h(-1)) and selectivity to styrene oxide (>92%). It was found by EPR characterization that the local coordination of Ti centers is transformed from five fold to six fold in presence of NaOH. Also, further isomerization of styrene oxide to phenylacetaldehyde is nearly suppressed by NaOH, thereby increasina the styrene oxide selectivity remarkably. (C) 2003 Elsevier B.V. All rights reserved.

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页码：365 / 369

页数：5

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