Liquid-phase hydrogenation of benzene to cyclohexene catalyzed by Ru/SiO2 in the presence of water-organic mixtures

被引：44
|
作者：
Spinacé, EV [1 ]
Vaz, JM [1 ]
机构：
[1] IPEN CNEN SP, Ctr Quim & Meio Ambiente, BR-05508900 Sao Paulo, Brazil
来源：
CATALYSIS COMMUNICATIONS | 2003年 / 4卷 / 03期
关键词：
benzene; cyclohexene; partial hydrogenation; ethylene glycol; glycerol; hydrophilicity;
D O I：
10.1016/S1566-7367(02)00270-4
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：
The liquid-phase hydrogenation of benzene to cyclohexene was studied using a Ru/SiO2 catalyst prepared by reduction of ruthenium(III) chloride impregnated in a hydrophilic non-porous silica. In a biphasic water/benzene system at 423 K and 5 MPa of hydrogen pressure, a 14% cyclohexene yield was obtained at 60% benzene conversion. Increased cyclohexene yields and selectivities were observed in the presence of ethylene glycol/water and glycerol/water mixtures, which consist mainly of hydrated organic molecules that can enhance the hydrophilicity around the ruthenium particles favoring the cyclohexene desorption. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：91 / 96
页数：6
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