LIQUID-PHASE HYDROGENATION OF CINNAMALDEHYDE OVER SUPPORTED RUTHENIUM CATALYSTS - INFLUENCE OF PARTICLE-SIZE, BIMETALLICS AND NATURE OF SUPPORT

被引：97
作者：
COQ, B
KUMBHAR, PS
MOREAU, C
MOREAU, P
WARAWDEKAR, MG
机构：
来源：
JOURNAL OF MOLECULAR CATALYSIS | 1993年 / 85卷 / 02期
关键词：
BIMETALLIC CATALYSTS; CINNAMALDEHYDE; HYDROGENATION; SELECTIVITY;
D O I：
10.1016/0304-5102(93)80103-2
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：
Hydrogenation of cinnamaldehyde was studied over supported Ru based catalysts. The influence of particle size, bimetallic formulation and nature of support on activity and selectivity to the desired product, cinnamyl alcohol, was investigated. Ru particle size had a pronounced effect on both TOF and selectivity. Larger Ru particles showed higher selectivity to cinnamyl alcohol, as well as higher TOF. Addition of Sn, Fe, Ge, Sb, Zn and Ag as a second metal improved both activity and selectivity. Ru-Sn/Al2O3 showed sustained improvement in selectivity, even at higher conversions, probably due to the presence of Ru-Sn(delta+) sites and/or due to the electron transfer from Sn to Ru. ZrO2 was found to be the most effective support in terms of selectivity. Possible reasons for this behaviour of ZrO2 are delineated.
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页码：215 / 228
页数：14
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