UNSUPPORTED NICKEL TUNGSTEN SULFIDE CATALYSTS .1. CATALYTIC BEHAVIOR IN HYDROGENATION AND HYDRODESULFURIZATION REACTIONS

被引：19
|
作者：
LACROIX, M
VRINAT, M
BREYSSE, M
机构：
[1] CNRS, Inst de Recherches sur la, Catalyse, Villeurbanne, Fr, CNRS, Inst de Recherches sur la Catalyse, Villeurbanne, Fr
来源：
APPLIED CATALYSIS | 1986年 / 21卷 / 01期
关键词：
ACTIVE SIZES - HYDRODESULFURIZATION - PHASE SEGREGATION - UNSUPPORTED CATALYSTS;
D O I：
10.1016/S0166-9834(00)81329-9
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 behavior of a series of unsupported nickel tungsten sulfide catalysts has been investigated in the hydrodesulfurization of dibenzothiophene and hydrogenation of biphenyl under medium-high-pressure conditions (22. 5 multiplied by 10**5 Pa). The results suggest that the activity may be related to the presence of a mixed 'NiWS' phase. In contrast to the 'CoMoS' species, the 'NiWS' entity strongly promotes the hydrogenation function. A study of the stability of these catalysts indicated that under a poorly sulfided atmosphere phase segregation occurs.
引用
收藏
页码：73 / 83
页数：11
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