Steam reforming of ethanol over Ni/Ce_(0.7)Pr_(0.3)O_2 catalyst

作     者：王红 张丽娟 袁木朝子 徐婷玉 刘源 

作者机构：School of Chemical EngineeringInner Mongolia University of Technology Tianjin Key Laboratory of Applied Catalysis Science and Engi-neeringDepartment of Catalysis Science and TechnologySchool of Chemical EngineeringTianjin University 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2012年第30卷第7期

页      面：670-675页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Project supported by National Natural Science Foundation of China (21066007) the Natural Science Foundation of Tianjin,China(10JCZDJC23800) the Natural Science Foundation of Mongolia,China (2009BS0203) the Ph.D.Programs Foundation of Ministry of Education of China (20100032110019) 

主　　题：cerium praseodymium ethanol steam reforming nickel doping rare earths 

摘      要：NiO/Ce0.7Pr0.3O2 catalysts were prepared by co-precipitation method and used for steam reforming of ethanol to produce hydrogen. The influence of nickel content and the doping of Pr on the catalytic performance were investigated. The catalysts were characterized by using temperature programmed reduction （TPR）, X-ray diffraction （XRD） and thermal analysis techniques. 15 wt.%NiO/Ce0.7Pr0.3O2 catalyst was highly active and selective for steam reforming of ethanol to produce hydrogen. With the doping of Pr, the anti-carbon deposition property of the catalyst and the anti-sintering stability of metal nickel were effectively improved. The improvement of the anti-carbon deposition is attributed to generation of oxygen vacancies resulted from the Pr doping; while the improvement of anti sintering is ascribed to the intensified interaction between the nickel species and the support which is owing to the Pr-doping resulted incorporation of some nickel ions into ceria lattice.