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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| Authors: | Rong Li Jiantai Ma Jingli Xu Xia Zhou and Zhixing Su |
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| Institution: | (1) College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 Gansu, P.R. China |
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| Abstract: | The surface oxygen distribution the active oxygen species for CO on the perovskite-type catalyst La1-xSrxCo1-xMnxO3 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. |
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| Keywords: | Perovskite-type oxides surface oxygen distribution active oxygen species catalytic oxidation of CO |
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