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Study of Ce0.7Sn0.3O2 supported PdO catalysts for CO oxidation

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Abstract

Palladium supported by Ce0.7Sn0.3O2 has been prepared by an impregnation method, and used for low temperature carbon monoxide oxidation. They were characterized by means of XRD and H2-TPR techniques. For PdO/Ce0.7Sn0.3O2 catalyst, three reduction peaks (α, β and γ) are observed. The β peak contributes to the reduction of PdO species and Sn4+ species on the surface of Ce0.7Sn0.3O2; β peak to the reduction of bulk SnO2 and surface Ce4+and the γ peak to the reduction of bulk CeO2. The increase of Pd loading from 0 to 0.75% enhances oxidation of CO, further increase of the Pd content affects the catalytic activity but slightly. XRD and TPR results show that highly dispersed Pd on the surface of the support is the active species for CO oxidation.

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Authors and Affiliations

  1. Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, 321004, P. R. China

    Yi-Jun Zhong, Rui Lin & Meng-Fei Luo

  2. Institute of Environmental Science, Zhejiang University, Jinhua, 321004, P. R. China

    Rui Lin & Wei-Ping Liu

  3. Hangzhou, 310027, P. R. China

    Rui Lin

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  1. Yi-Jun Zhong
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  2. Rui Lin
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  3. Meng-Fei Luo
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  4. Wei-Ping Liu
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Zhong, YJ., Lin, R., Luo, MF. et al. Study of Ce0.7Sn0.3O2 supported PdO catalysts for CO oxidation. Reaction Kinetics and Catalysis Letters 79, 53–60 (2003). https://doi.org/10.1023/A:1024151516093

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