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Citation: LU Xiao-lin, LIU Zi-kui, MA Su-fang, BAI Xue. Effect of Dy and Y doping on the catalytic performance of CuO/CeZrO2 for the preferential oxidation of CO in H2-rich stream[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(7): 870-875. shu

Effect of Dy and Y doping on the catalytic performance of CuO/CeZrO2 for the preferential oxidation of CO in H2-rich stream

  • School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China

  • Corresponding author: BAI Xue, bai-xue@imut.edu.cn
  • Received Date: 25 December 2015
    Revised Date: 9 March 2016

    Fund Project: The project was supported by the National Natural Science Foundation of China 21263011

Figures(5)

  • CuO/CeZrO2 catalysts doped with different amounts of Dy2O3 and Y2O3 were prepared by the hydrothermal-impregnation method and characterized by XRD, H2-TPR and nitrogen sorption; the effect of Dy and Y doping on the catalytic performance of CuO/CeZrO2 for the preferential oxidation of CO in H2-rich stream was investigated. The results indicate that all the CuO/CeZrO2 catalysts have a fluorite structure; doping with appropriate amounts of Dy2O3 and Y2O3 can improve the interaction between the active component and support, the dispersion of CuO and its reducibility at low temperature, which is effective to enhance the activity of Dy and Y doped CuO/CeZrO2 catalysts in the preferential oxidation of CO. Moreover, the doping with Dy2O3 and Y2O3 can also reduce the inhibition effect of CO2 on CuO/CeZrO2 in CO oxidation and then improve its catalytic stability.
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