Hydrogen activation on alumina supported MoS2 based catalysts:: Role of the promoter

被引：19
|
作者：
Lacroix, M
Dumonteil, C
Breysse, M
Kasztelan, S
机构：
[1] Inst Rech Catalyse, F-69626 Villeurbanne, France
[2] Univ Paris 06, Lab Reactiv Surface, F-75252 Paris, France
[3] Inst Francais Petr, F-92852 Rueil Malmaison, France
来源：
JOURNAL OF CATALYSIS | 1999年 / 185卷 / 01期
关键词：
molybdenum sulfide; promoter; hydrotreating catalysts; isotopic exchange; hydrogen; thermodesorption; thermoreduction;
D O I：
10.1006/jcat.1999.2505
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 properties of alumina-supported Mo and NiMo sulfides toward a hydrogen atmosphere were investigated in order to elucidate if the synergy observed in hydrotreating reactions might be related to the activation of hydrogen. The determination of the amount of adsorbed hydrogen and of the H-2-D-2 exchange rate for various reduced states has evidenced that Ni does not promote the reducibility and the amount of adsorbed hydrogen of the MoS2 phase while the exchange rate is increased only by factor of 2-3. It is concluded that the synergy observed in hydrotreating reactions does not come from hydrogen activation limitation. (C) 1999 Academic Press.
引用
收藏
页码：219 / 222
页数：4
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