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

被引：88
|
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
收藏
页码：293 / 303
页数：11
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