CO氧化反应中H_2O对MO_x和Au/MO_x催化性能的影响  

Effect of H_2O on Catalytic Performance of MO_x and Au/MO_x Catalysts for CO Oxidation

作　　者：王桂英[1] 张文祥[1] 崔云琛[1] 廉红蕾[1] 蒋大振[1] 吴通好[1] 

机构地区：[1]吉林大学化学系,长春130023

出　　处：《催化学报》2001年第4期408-410,共3页

基　　金：山西煤转化重点实验室 ( 1999年 ) ;吉林大学创新基金 ( 2 0 0 0年 ) ;国家自然科学基金 ( 2 0 0 73167) ;国家教育部重点( 1A30 112 3)资助项目

摘　　要：MO x and Au/MO x catalysts were prepared by the coprecipitation method and their catalytic performance for CO oxidation was evaluated through the feeding gas with or without water vapor. The results showed that the activity and the stability of MO x catalysts are greatly dependent on the kinds of metal oxides. The activity order of MO x is Co 3O 4>NiO>Fe 2O 3>CuO>MnO x>ZnO>Al 2O 3>Cr 2O 3>CaO>La 2O 3. The water has negative effect on the activity of MO x (M=Co, Cu, Fe, Mn, Ni and Zn) catalysts. The catalytic activity and stability of Au/MO x catalysts are greatly dependent on the properties of MO x. The water has negative effect on the activity of Au/MO x (M=Ca, Cr, Cu,La and Mn) and on the stability of Au/MO x (M=Al, Co, Fe, Mn, Ni and Zn) at ambient temperature.MOx and Au/MOx catalysts were prepared by the coprecipitation method and their catalytic performance for CO oxidation was evaluated through the feeding gas with or without water vapor. The results showed that the activity and the stability of MO, catalysts are greatly dependent on the kinds of metal oxides. The activity order of MOx is Co3O4 > NiO > Fe2O3 > CuO > MnOx > ZnO > Al2O3 > Cr2O3 > CaO > La2O3. The water has negative effect on the activity of MOx (M = Co, Cu, Fe, Mn, Ni and Zn) catalysts. The catalytic activity and stability of Au/MOx catalysts are greatly dependent on the properties of MOx. The water has negative effect on the activity of Au/MOx (M = Ca, Cr, Cu, La and Mn) and on the stability of Au/MOx (M = Al, Co, Fe, Mn, Ni and Zn) at ambient temperature.

关 键 词：金属氧化物 金 负载型催化剂 一氧化碳 氧化 稳定性 水 催化活性 

分 类 号：O643.3[理学—物理化学]