On the sulfur tolerance of supported Ni(Co)Mo sulfide hydrotreating catalysts

被引：39

作者：

Hensen, EJM ^{[1
]}

de Beer, V ^{[1
]}

van Veen, JAR ^{[1
]}

van Santen, RA ^{[1
]}

机构：

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

来源：

JOURNAL OF CATALYSIS | 2003年 / 215卷 / 02期

关键词：

hydrodesulfurization; CoMo; NiMo; thiophene; sulfur tolerance; support; Bronsted acidity;

D O I：

10.1016/S0021-9517(03)00012-5

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：

This research note describes the sulfur tolerance in hydrodesulfurization for a set of CoMo and NiMo catalysts on various supports. The activity decrease with increasing H2S concentration is diminished by supports with enhanced Bronsted acidity. The sulfur tolerance for NiMo catalysts increases in the order activated carbon < alumina < titania < amorphous silica-alumina. A direct interaction between Bronsted acid sites and the active sites is proposed. Complexing agents decrease the sulfur tolerance for a given support due to stacking of MoS2 slabs. Clearly, CoMo catalysts are less prone to sulfur poisoning than NiMo catalysts. NiMo is the preferred metal combination for desulfurization under sulfur-lean conditions. (C) 2003 Elsevier Science (USA). All rights reserved.

引用

页码：353 / 357

页数：5

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