ENHANCEMENT OF OLEFIN HYDROFORMYLATION RELATED TO SUPPORTED BIMETALLIC RH-CO CLUSTERS

被引：29

作者：

HUANG, L ^{[1
]}

XU, YD ^{[1
]}

PIAO, GJ ^{[1
]}

LIU, AM ^{[1
]}

ZHANG, WT ^{[1
]}

机构：

[1] MINZU NORMAL INST INNER MONGOLIA,DEPT CHEM,TONGLIAO 028043,PEOPLES R CHINA

来源：

CATALYSIS LETTERS | 1994年 / 23卷 / 1-2期

关键词：

SIO2-SUPPORTED BIMETALLIC RH-CO CLUSTER; RHCO3(CO)12; ETHYLENE HYDROFORMYLATION; PROPYLENE HYDROFORMYLATION;

D O I：

10.1007/BF00812134

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 atmospheric hydroformylations of ethylene and propylene were investigated over SiO2-supported Rh4(CO)12, Co2(CO)8, Rh2Co2(CO)12 and RhCo3(CO)12-derived catalysts. The bimetal cluster-derived catalysts showed excellent activities for the formation of oxygenates. In situ IR study on partially dehydroxylated SiO2-supported RhCO3(CO)12 suggested that the bimetal cluster framework may be preserved after decarbonylation under H-2 at 623 K and may be recarbonylated at room temperature. A strong physisorption of RhCo3 (CO) 12 on SiO2 is proposed, due to a nucleophilic attack of surface oxygen on the Co atoms, which promotes a metal-support interaction and thus stabilizes the bimetal cluster framework. A subcarbonyl bimetal cluster is thought to be the actual catalytic species on the surface.

引用

页码：87 / 95

页数：9

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