MoS2 morphology and promoter segregation in commercial Type 2 Ni-Mo/Al2O3 and Co-Mo/Al2O3 hydroprocessing catalysts

被引：142

作者：

Eijsbouts, S

van den Oetelaar, LCA

van Puijenbroek, RR

机构：

[1] Albemarle Catalysts, Res Ctr, NL-1030 BE Amsterdam, Netherlands

[2] Akzo Nobel, Res & Technol Chem, NL-6800 SB Arnhem, Netherlands

来源：

JOURNAL OF CATALYSIS | 2005年 / 229卷 / 02期

关键词：

molybdenum sulfide; nickel sulfide; cobalt sulfide; hydrotreating catalysts; sulfidation (scanning) transmission electron microscopy-energy-dispersive X-ray analysis ((S)TEM-EDX); X-ray diffraction analysis (XRD); morphology; stacking; segregation;

D O I：

10.1016/j.jcat.2004.11.011

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：

A series of commercial liquid-phase-sulfided Type 2 Ni-Mo/Al2O3 and Co-Mo/Al2O3 catalysts used in different trickle-phase reactions has been characterized by (scanning) transmission electron microscopy combined with energy-dispersive X-ray analysis ((S)TEM-EDX) and X-ray diffraction (XRD) analysis. In contrast to what is reported for H2S/H-2 sulfided Type 2 model catalysts, MoS2 stacking is not prominent in liquid-phase sulfided Type 2 commercial catalysts. The presence or absence Of MoS2 stacking has been shown to be highly dependent on the sulfidation procedure applied. Although Type 2 commercial Ni-Mo catalysts have high MoS2 dispersion, there is a significant Ni sulfide segregation. This is not the case for their Co-containing counterparts. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：352 / 364

页数：13

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