Promoting synergy in CoW sulfide hydrotreating catalysts by chelating agents

被引：72

作者：

Kishan, G ^{[1
]}

Coulier, L ^{[1
]}

van Veen, JAR ^{[1
]}

Niemantsverdriet, JW ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands

来源：

JOURNAL OF CATALYSIS | 2001年 / 200卷 / 01期

关键词：

hydrodesulfurization; chelating ligands; thiophene; model catalysts; silica; cobalt; tungsten; sulfidation;

D O I：

10.1006/jcat.2001.3203

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：

Adding chelating agents such as 1,2-cyclohexanediamine-N,N,N',N'-tetraacetic acid (CyDTA) and triethylenetetraaminehexa acetic acid (TTHA) to the aqueous solution of cobalt nitrate and ammonium metatungstate used for impregnating the silica support results in enhanced activities for the hydrodesulfurization of thiophene after the catalysts have been sulfided. These chelating agents serve to retard the sulfidation of cobalt with respect to that of tungsten, which facilitates the formation of a phase in which Co atoms decorate the edges of WS2, analogous to the well-known CoMoS phase. (C) 2001 Academic Press.

引用

页码：194 / 196

页数：3

共 12 条

[1] A quick EXAFS study of the sulfidation of NiMo/SiO2 hydrotreating catalysts prepared with chelating ligands [J].

Cattaneo, R ;

Weber, T ;

Shido, T ;

Prins, R .

JOURNAL OF CATALYSIS, 2000, 191 (01) :225-236

[2] The relationship between the structure of NiMo/SiO2 catalyst precursors prepared in the presence of chelating ligands and the hydrodesulfurization activity of the final sulfided catalysts [J].

Cattaneo, R ;

Shido, T ;

Prins, R .

JOURNAL OF CATALYSIS, 1999, 185 (01) :199-212

[3] Correlation between hydrodesulfurization activity and order of Ni and Mo sulfidation in planar silica-supported NiMo catalysts: The influence of chelating agents [J].

Coulier, L ;

de Beer, VHJ ;

van Veen, JAR ;

Niemantsverdriet, JW .

JOURNAL OF CATALYSIS, 2001, 197 (01) :26-33

[4] On the formation of cobalt-molybdenum sulfides in silica-supported hydrotreating model catalysts [J].

Coulier, L ;

de Beer, VHJ ;

van Veen, JAR ;

Niemantsverdriet, JW .

TOPICS IN CATALYSIS, 2000, 13 (1-2) :99-108

[5] Surface science model of a working cobalt-promoted molybdenum sulfide hydrodesulfurization catalyst: Characterization and reactivity [J].

deJong, AM ;

deBeer, VHJ ;

vanVeen, JAR ;

Niemantsverdriet, JW .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (45) :17722-17724

[6] Preparation of highly active NiW hydrotreating model catalysts with 1,2-cyclohexanediamine-N,N,N′N′-tetraacetic acid (CyDTA) as a chelating agent [J].

Kishan, G ;

Coulier, L ;

de Beer, VHJ ;

van Veen, JAR ;

Niemantsverdriet, JW .

CHEMICAL COMMUNICATIONS, 2000, (13) :1103-1104

[7] Sulfidation and thiophene hydrodesulfurization activity of nickel tungsten sulfide model catalysts, prepared without and with chelating agents [J].

Kishan, G ;

Coulier, L ;

de Beer, VHJ ;

van Veen, JAR ;

Niemantsverdriet, JW .

JOURNAL OF CATALYSIS, 2000, 196 (01) :180-189

[8] The influence of chelating ligands on the sulfidation of Ni and Mo in NiMo/SiO2 hydrotreating catalysts [J].

Medici, L ;

Prins, R .

JOURNAL OF CATALYSIS, 1996, 163 (01) :38-49

[9] STRUCTURE AND FUNCTION OF THE CATALYST AND THE PROMOTER IN CO-MO HYDRODESULFURIZATION CATALYSTS [J].

PRINS, R ;

DEBEER, VHJ ;

SOMORJAI, GA .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1989, 31 (1-2) :1-41

[10]

TopsOe H, 1996, HYDROTREATING CATALY

← 1 2 →