New aspects of catalytic functions on sulfide catalysts

被引：38

作者：

Breysse, M

Berhault, G

Kasztelan, S

Lacroix, M

Maugé, F

Perot, G

机构：

[1] Univ Paris 06, Lab Reactiv Surface, CNRS, UMR 7609, F-75252 Paris 05, France

[2] Inst Rech Catalyse, CNRS, UPR 5401, F-69626 Villeurbanne, France

[3] Inst Francais Petr, F-92852 Rueil Malmaison, France

[4] Inst Sci Mat & Rayonnement, CNRS, UMR 6506, Catalyse & Spectrochim Lab, F-14050 Caen, France

[5] Univ Poitiers, Catalyse Chim Organ Lab, CNRS, UMR 6503, F-86022 Poitiers, France

来源：

CATALYSIS TODAY | 2001年 / 66卷 / 01期

关键词：

sulfide catalysts; Lewis and Bronsted sites; infrared studies;

D O I：

10.1016/S0920-5861(00)00600-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The influence of Co on the acidic properties (Lewis and Bronsted) of molybdenum sulfide catalyst were determined by infrared studies of adsorbed pyridine or 2,6-dimethylpyridine, These studies show that the promoter addition increases the strength of the Lewis sites and the number of Bronsted sites, These results are correlated to those obtained for dibenzothiophene conversion. For this reaction, it was observed that the influence of the promoter is very different for the two different routes involved in the reaction scheme. Consequently, the role of the promoter is not only to increase the number of sulfur vacancies but also to modify the acid-base properties of the catalyst. (C) 2001 Elsevier Science B,V, All rights reserved.

引用

页码：15 / 22

页数：8

共 24 条

[1] Alkyldibenzothiophenes hydrodesulfurization-promoter effect, reactivity, and reaction mechanism [J].