PROMOTING EFFECT OF RARE EARTH ADDITIVES ON Ni-BASED METHANATION CATALYSTS

作     者：LIU Xin-Hua LI Xiao-Li M1AO Yin CAO Pei-Hua HU Rui-ShengDepartment of Chemistry, Neimenggu University Huhehaote, Neimenggu 010021DING Yu-QingScieittifk’ Research huititutf of I’etro/r/tm I’hp/oratMii and 100083 

出 版 物：《Journal of Energy Chemistry》 (能源化学(英文版))

年 卷 期：1994年第4期

页      面：468-478页

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

主　　题：TPD La TPSR Ni PROMOTING EFFECT OF RARE EARTH ADDITIVES ON Ni-BASED METHANATION CATALYSTS 

摘      要：The promoting effect of rare earth oxides on Ni- based methanationcatalyst was investigated by temperature programmed desorption （TPD） andtemperature programmed surface reaction （TPSR ） with the help of X-rayphoto-electrospectroscopy （XPS） and infrared spectroscopy （IR）. The additionof rare earth oxides not only improved the dispersion of the active component ofthe catalyst, but also changed the species and properties of the surface activesites of the catalyst. increased low energy adsorption sites and retainedhydrogen. promoted the disproportionation and decomposition of CO. Somerare earth oxides enriched on the surface after reduction and made Ni2pbinding energy lower.