Studies on the Surface Oxygen Species and the Catalytic Activity for CO Oxidation of La1-xSrxCo1-xMnxO3, a Perovskite-Type Oxides Catalyst

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• 作者：Rong Li ; Jiantai Ma ; Jingli Xu ; Xia Zhou and Zhixing Su
• 关键词：Perovskite ; type oxides ; surface oxygen distribution ; active oxygen species ; catalytic oxidation of CO
• 刊名：Reaction Kinetics and Catalysis Letters
• 出版时间：2000
• 出版年：2000
• 期刊代码：31_01331736
• 类别：en
• 卷：70
• 期：2
• 页码：363-370
• 数据来源：sp

摘要

The surface oxygen distribution the active oxygen species for CO on the perovskite-type catalyst La_1-xSr_xCo_1-xMn_xO₃ and its catalytic oxidation activity with CO as probe were investigated by means of XRD, TPD and XPS in a continuous flow microreactor. Results showed that different adsorbed oxygen species and lattice oxygen were distributed on the catalyst surface. Meanwhile, the surface lattice oxygen of the oxides was reacting in the course of CO oxidation. This leads to the conclusion that, when x=0.6, the catalyst shows the best oxidative activity and lower starting temperature.