Effect of Dy and Y doping on the catalytic performance of CuO/CeZrO<sub>2</sub> for the preferential oxidation of CO in H<sub>2</sub>-rich stream

LU Xiao-lin; LIU Zi-kui; MA Su-fang; BAI Xue

Volume 44 Issue 7

Jul. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(7): 870-875

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.

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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.

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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

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

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Corresponding author: BAI Xue, E-mail: bai-xue@imut.edu.cn
Received Date: 2015-12-25
Rev Recd Date: 2016-03-09

Available Online: 2021-01-23

Publish Date: 2016-07-10

Abstract

Abstract

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.
- CuO,
- CeZrO₂ mixed oxide,
- preferential oxidation of CO,
- H₂-rich stream,
- Dy₂O₃,
- Y₂O₃

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References(20)

References

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