Water Gas Shift Activity of Pt/CexZr1-xO2 Catalysts in Sulfur-Containing Syngas

被引：4
|
作者：
Liu Bing [1 ,2 ]
Li Wenzhao [1 ]
Xu Hengyong [1 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
CHINESE JOURNAL OF CATALYSIS | 2010年 / 31卷 / 10期
关键词：
water gas shift; cerium; zirconium; solid solution; redox ability; platinum; hydrogen sulfide; reversible poisoning; SULFIDED MOLYBDENUM CATALYSTS; CEO2-ZRO2; SOLID-SOLUTIONS; H-2; PRODUCTION; PERFORMANCE; HYDROGEN; REDUCTION; SUPPORT; STORAGE; OXIDES; H2S;
D O I：
10.3724/SP.J.1088.2010.00327
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A series of Pt/CexZr1-xO2 catalysts were prepared by the wet-impregnation method, characterized by X-ray diffraction and temperature-programmed reduction, and tested in the water gas shift (WGS) reaction. The results show that the CexZr1-xO2 solid solution has higher redox ability, and doping ceria with zirconium apparently changes the pore structure. The Pt catalysts supported on CexZr1-xO2 has higher Pt dispersion and WGS activity in pure reforming syngas. The WGS activity dropped in sulfur-containing syngas over the Pt/CexZr1-xO2 catalysts. The loss of activity increases with the increase of H2S content, but the deactivation of the catalyst due to H2S adsorption is reversible and can be readily reversed in the reducing atmosphere of the WGS mixture without H2S.
引用
收藏
页码：1247 / 1252
页数：6
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