氧化铝基表层ZrO_2的相结构、孔结构及性能研究  

Study on Phase Structure, Pore Structure and Catalytic Property of Out-layer ZrO_2 on Alumina Base

作　　者：周仁贤[1] 魏建根 郑小明[1] 吴红丽[2] 吕光烈[2] 

机构地区：[1]杭州大学催化研究所,杭州310028 [2]杭州大学中心实验室,杭州310028

出　　处：《物理化学学报》1995年第12期1097-1100,共4页Acta Physico-Chimica Sinica

基　　金：浙江省科委基金

摘　　要：XRD was used to Characterize the system of alumina supported ZrO2 in atemperature range of 500-1000℃. It was found that ZrO2 in ZrO2-Al2O3 sample was noncrystalline below 600℃, cubic-ZrO2 over a temperature range of 600-900℃,and t-ZrO2at temperature higher than 900℃. The pore structure, CO oxidation activity and sufaceoxygen properties of out-layer ZrO2 were also studied. The results indicated that smallout-layer ZrO2 made a contribution to pore structure of alumina base in a pore size rangeof 10-50A, and not only was CO oxidation activity of ZrO2-Al2O3 samples related to itsphase structure, but also to properties of its surface oxygen desorption and lattice oxygendefect.XRD was used to Characterize the system of alumina supported ZrO2 in atemperature range of 500-1000℃. It was found that ZrO2 in ZrO2-Al2O3 sample was noncrystalline below 600℃, cubic-ZrO2 over a temperature range of 600-900℃,and t-ZrO2at temperature higher than 900℃. The pore structure, CO oxidation activity and sufaceoxygen properties of out-layer ZrO2 were also studied. The results indicated that smallout-layer ZrO2 made a contribution to pore structure of alumina base in a pore size rangeof 10-50A, and not only was CO oxidation activity of ZrO2-Al2O3 samples related to itsphase structure, but also to properties of its surface oxygen desorption and lattice oxygendefect.

关 键 词：催化剂 一氧化碳 氧化锆 氧化铝 相结构 

分 类 号：TQ426.82[化学工程] O643.36[理学—物理化学]