稀土钙钛矿型催化剂对CO催化氧化活性及表面氧种的研究

THE CATALYTIC ACTIVITY AND ACTIVE OXYGEN SPECIES FOR CO OXIDATION OF La_(1-X)Sr_XMn_(1-X) B_XO_3(B=Fe,Ni,Cr)

研究了CO在不同催化剂La1 -xSrxMn1 -xBxO3(B =Fe、Ni、Cr)上的氧化反应活性 ,并利用程序升温热脱附(TPD)的方法对不同x值催化剂表面氧种及其含量的变化规律进行了考察 ,结合反应活性及表面吸附氧种随x值的变化规律 ,研究了催化剂对CO氧化反应的活性与表面活性氧种的关系。

The catalytic activity and surface active oxygen species for CO oxidation on the complex oxides catalysts of La 1- x Sr x Mn 1- x B x O 3 (B=Fe,Ni,Cr)were investigated with microreactor and TPD methods.According to the relation of activity and surface oxygen species amount,the active oxygen species for CO oxidation on this kind of catalyst was examined.