ZrO_2、Y_2O_3对CH_4燃烧催化剂Fe_2O_3/γ-Al_2O_3的改性作用  

Studies on the effect of ZrO_2 and Y_2O_3 on Fe_2O_3/γ-Al_2O_3 catalyst

作　　者：李丽娜[1] 龚茂初[1] 向云[1] 张鑫[1] 陈耀强[1] 

机构地区：[1]四川大学化学学院,四川成都610064

出　　处：《化学研究与应用》2003年第1期133-134,108,共3页Chemical Research and Application

基　　金：国家重点基础研究规划项目(G1999022407);四川省应用基础项目资助

摘　　要：Catalysts for methane combustion were prepared by Fe supported on γ-Al2O3?ZrO2-Al2O3?YSZ-Al2O3,respectively.The results indicated that among these three kinds of catalysts Fe2O3/YSZ-Al2O3 has showed the highest activity and best thermal stability.The XPS results demonstrated that the addition of ZrO2 and Y2O3 can decrease the interaction between iron species and γ-Al2O3 support,and prevent Al2O3 transmitting to the surface of catalyst.Catalysts for methane combustion were prepared by Fe supported on γ-Al2O3?ZrO2-Al2O3?YSZ-Al2O3,respectively.The results indicated that among these three kinds of catalysts Fe2O3/YSZ-Al2O3 has showed the highest activity and best thermal stability.The XPS results demonstrated that the addition of ZrO2 and Y2O3 can decrease the interaction between iron species and γ-Al2O3 support,and prevent Al2O3 transmitting to the surface of catalyst. 

关 键 词：催化燃烧 YSZ-Al2O3载体 XPS 

分 类 号：O643.322[理学—物理化学]