Water-gas shift reaction over sulfided molybdenum catalysts I. Alumina, titania and zirconia-supported catalysts

被引：90

作者：

Laniecki, M ^{[1
]}

Malecka-Grycz, M ^{[1
]}

Domka, F ^{[1
]}

机构：

[1] Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland

来源：

APPLIED CATALYSIS A-GENERAL | 2000年 / 196卷 / 02期

关键词：

water-gas shift reaction; Ni-Mo-supported sulfides; supports; -; gamma-Al2O3; TiO2; ZrO2;

D O I：

10.1016/S0926-860X(99)00480-9

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：

Three series of Ni-Mo-sulfided catalysts supported on gamma-Al2O3, TiO2 and ZrO2 were tested in the water-gas shift (WGS) reaction with sulfided feed. Characterization of oxidized forms of the WGS catalysts has been carried out using thermogravimetry, X-ray diffraction (XRD), BET, ammonia-temperature-programmed desorption (TPD), pyridine-FT-IR, TPR. The highest catalytic activity was found for Mo catalysts based on TiO2 and Ni-containing TiO2 supports. This is related to better homogeneity in the coordination of Mo species on titania than that on alumina and zirconia. The presence of Ni2+ enhances the reducibility of Mo species and is responsible for synergy of Ni-Mo-S-based catalysts and better catalytic performance. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：293 / 303

页数：11

共 29 条

[1] Active forms for water-gas shift reaction on NiMo-sulfide catalysts [J].