Unexpected Support Effect in Hydrotreating: Evidence of a Metallic Character for ReS2/Al2O3 and ReS2/SiO2 Catalysts

被引：17

作者：

Sepulveda, C. ^{[1
]}

Garcia, R. ^{[1
]}

Escalona, N. ^{[1
]}

Laurenti, D. ^{[2
]}

Massin, L. ^{[2
]}

Vrinat, M. ^{[2
]}

机构：

[1] Univ Concepcion, Fac Ciencias Quim, Concepcion, Chile

[2] Univ Lyon 1, CNRS, IRCELYON, UMR 5256, F-69626 Villeurbanne, France

来源：

CATALYSIS LETTERS | 2011年 / 141卷 / 07期

关键词：

Rhenium sulfide; Support effect; Hydrodesulfurization; Hydrogenation; SULFIDE CATALYSTS; HYDRODESULFURIZATION; HYDROGENATION; REACTIVITY; ALKYLDIBENZOTHIOPHENES; ACTIVATION; MECHANISM; BENZENE;

D O I：

10.1007/s10562-011-0578-2

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：

Rhenium sulfide based catalysts were prepared by the incipient wetness impregnation method over alumina and silica supports and evaluated for 4,6-dimethyldibenzothiophene hydrodesulfurization in a high-pressure stirred-tank reactor. The catalyst prepared over silica was about six times more active for hydrodesulfurization than the corresponding catalyst prepared over alumina and a NiMo/Al2O3 industrial reference catalyst. This surprising and positive SiO2 support effect was explained by a metallic character of the supported sulfide, which was demonstrated using a kinetic approach of competitive hydrogenations and by XPS characterization.

引用

页码：987 / 995

页数：9

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