Liquid-phase Friedel-Crafts alkylation using CuCr2-xFexO4 spinel catalysts

被引：47

作者：

Ghorpade, SP ^{[1
]}

Darshane, VS ^{[1
]}

Dixit, SG ^{[1
]}

机构：

[1] Univ Bombay, Div Appl Chem, Dept Chem Technol, Mumbai 400019, India

来源：

APPLIED CATALYSIS A-GENERAL | 1998年 / 166卷 / 01期

关键词：

spinel catalyst; catalyst characterization; Lewis acidity; Friedel-Crafts alkylation;

D O I：

10.1016/S0926-860X(97)00266-4

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：

Iron oxide (Fe2O3) offers Lewis acidic sites for alkylation but gives low yield and cannot be reused. Therefore, spinels belonging to system CuCr2-xFexO4 were prepared by isomorphic substitution of octahedral chromium by iron in the spinel lattice. These were found to have better catalytic activity for the liquid phase alkylation of benzene with benzyl chloride giving diphenylmethane. CuFe2O4 gives the highest yield. The Lewis acidity of the catalysts is mainly responsible for the good catalyst performance. The ease of electron movement appears to improve the yields. The propel ties of these catalysts were characterized by using DRIFT spectroscopy. The effects of various parameters on the catalytic reaction have been investigated. (C) 1998 Elsevier Science B.V.

引用

页码：135 / 142

页数：8

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