Chinese Journal of Applied Chemistry

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Effect of Different Zirconia Phase on Methane Combustion Activity and Stability over Pd/ZrO2

PAN Xiqiang1,2, YANG Xiangguang1*   

  1. (1.Laboratory of Green Chemistry and Process,Changchun Institute of
    Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
    2.University of Chinese Academy of Sciences,Beijing 100049,China)
  • Received:2013-03-25 Revised:2013-04-27 Published:2014-02-10 Online:2014-02-10
  • Contact: yang

Abstract: Pd/ZrO2 attracts more attention for methane combustion at low temperature. ZrO2 support plays an important role in stabilization of PdO. In this article, pure M-ZrO2 and T-ZrO2 were synthesized by solvothermal method, and then Pd/M-ZrO2 and Pd/T-ZrO2 were prepared by incipient wetness method in order to investigate the support structure effect on the methane combustion at low temperature. It has been demonstrated that the methane combustion activity and stability of Pd/M-ZrO2 is much better than that of Pd/T-ZrO2. Combined XRD, TEM, TPO with catalytic performance, it shows that the better activity and stability of Pd/M-ZrO2 is related to the greater dispersion of PdO and the type of interaction between PdO and ZrO2, respectively.

Key words: Pd/ZrO2, monoclinic ZrO2, tetragonal ZrO2, methane, methane combustion

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