Catalytic hydrogenolysis of aromatic ketones by a sol-gel entrapped combined Pd-[Rh(cod)Cl]2 catalyst

被引：32

作者：

Abu-Reziq, R ^{[1
]}

Avnir, D ^{[1
]}

Blum, J ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Dept Organ Chem, IL-91904 Jerusalem, Israel

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2002年 / 187卷 / 02期

基金：

以色列科学基金会;

关键词：

ketones; hydrogenation; palladium; rhodium; sol-gel;

D O I：

10.1016/S1381-1169(02)00235-2

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：

Co-entrapment of palladium nanoparticles and soluble [Rh(cod)(mu-Cl)](2) in a silica sol-gel matrix forms a catalyst that promotes exhaustive hydrogenation and hydrogenolysis of various aromatic ketones. While the hydrogenation of acetophenone may proceed by initial formation of alpha-phenylethanol followed by dehydration to styrene and further reduction of the olefinic and aromatic C-C bonds, the reaction of benzophenone and related compounds does not involve the intermediary of a carbinol. The immobilized combined catalyst is leach-proof and perfectly recyclable in at least five consecutive runs. Its unique catalytic activity is attributed to a synergistic effect between the different metal atoms. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：277 / 281

页数：5

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