IMPROVED HYDROGENATION CATALYSTS FOR COAL-DERIVED LIQUIDS

被引：5
|
作者：
KOUSSATHANA, M
VAMVOUKA, N
VERYKIOS, X
机构：
[1] Institute of Chemical Engineering and High Temperature Chemical Processes, University of Patras
来源：
INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 1994年 / 18卷 / 02期
关键词：
HYDROGENATION; CATALYSTS; BIMETALLIC; DOPING; COAL-LIQUIDS;
D O I：
10.1002/er.4440180222
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Benzene, naphthalene and biphenyl hydrogenation in a slurry-phase reactor were used as probe reactions to investigate the influence of bimetallic catalyst formulations and altervalent carrier doping on hydrogenation activity and sulphur-poisoning characteristics. It was found that addition of a secondary metal such as Pd, Ir or Re to primary metals such as Pt, Rh, or Ru, has a beneficial influence on these parameters. Significant enhancements in hydrogen adsorption capacity, hydrogenation activity and sulphur tolerance were observed when metals were dispersed on TiO2 doped with higher-valence cations. The enhancement factors were found to be a function of the dopant concentration in the carrier. Results related to altervalent carrier doping are explained in terms of long-range electronic interactions at the metal-support interface which alter the work function of surface metal atoms.
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页码：243 / 250
页数：8
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