Epoxidation of styrene by anhydrous hydrogen peroxide over boehmite and alumina catalysts with continuous removal of the reaction water

被引：45

作者：

Choudhary, VR ^{[1
]}

Patil, NS

Chaudhari, NK

Bhargava, SK

机构：

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

[2] RMIT Univ, Dept Appl Phys, Melbourne, Vic 3000, Australia

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2005年 / 227卷 / 1-2期

关键词：

epoxidation of styrene; styrene oxide; boehmite; alumina; anhydrous hydrogen peroxide;

D O I：

10.1016/j.molcata.2004.10.025

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：

Boehmite and alumina (obtained from the boehmite by its calcination at different temperatures 300-900degreesC) are active and stable catalysts for the selective epoxidation of styrene by anhydrous H2O2 to styrene oxide with continuous removal of the reaction water. Influence of the catalyst (boehemite) calcination temperature, H2O2/styrene ratio and catalyst loading on the styrene conversion and selectivity for styrene oxide. phenyl acetaldehyde. benzaldehyde and benzoic acid in the epoxidation has been investigated. In the presence of water. the catalyst shows very poor activity and selectivity in the epoxidation. The catalyst also catalyses H2O2 decomposition and hence has optimum loading for obtaining high-styrene conversion in the epoxidation. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：217 / 222

页数：6

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