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Frontiers of Chemical Science and Engineering

, Volume 11, Issue 4, pp 603–612 | Cite as

Effects of preparation methods on the activity of CuO/CeO2 catalysts for CO oxidation

  • Huanhuan Shang
  • Xiaoman Zhang
  • Jing XuEmail author
  • Yifan Han
Research Article

Abstract

CO oxidation has been investigated on three CuO/CeO2 catalysts prepared by impregnation, co-precipitation and mechanical mixing. The origin of active sites was explored by the multiple techniques. The catalyst prepared by impregnation has more highly dispersed CuO and stronger interactions between CuO and CeO2 to promote the reduction of CuO to Cu+ species at the Cu-Ce interface, leading to its highest catalytic activity. For the catalyst prepared by co-precipitation, solid solution structures observed in Raman spectra suppress the formation of the Cu-Ce interface, where the adsorbed CO will react with active lattice oxygen to form CO2, and thus it displays a lower catalytic performance. No Cu-Ce interface exists in the catalyst prepared by the mechanical mixing method due to the separate phases of CuO and CeO2, resulting in its lowest activity among the three catalysts.

Keywords

CuO/CeO2 CO oxidation interfaces structure-performance relationship active sites 

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Notes

Acknowledgements

The authors are grateful to the support from the National Natural Science Foundation of China (21576084, U1463205 and 91534127), and the Chinese Education Ministry 111 project (B08021).

Supplementary material

11705_2017_1661_MOESM1_ESM.pdf (141 kb)
Effects of preparation methods on the activity of CuO/CeO2 catalysts for CO oxidation

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Copyright information

© Higher Education Press and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Huanhuan Shang
    • 1
  • Xiaoman Zhang
    • 1
  • Jing Xu
    • 1
    Email author
  • Yifan Han
    • 1
  1. 1.State Key Laboratory of Chemical EngineeringEast China University of Science and TechnologyShanghaiChina

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