Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (02): 445-449.doi: 10.3866/PKU.WHXB201111244

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Preferential Oxidation of CO over Photoreduced Pt/TiO2 Catalysts in H2-Rich Stream

WANG Fang, WANG Cai-Hong, LIU Guo-Xia   

  1. Department of Chemistry & Chemical Engineering, Binzhou University, Binzhou 256603, Shandong Province, P. R. China
  • Received:2011-08-11 Revised:2011-11-02 Published:2012-01-11
  • Contact: WANG Fang
  • Supported by:

    The project was supported by the Research Fund of Binzhou University, China (2010Y06).

Abstract: The optimum reaction parameters for CO oxidation in the presence and absence of H2 have been investigated by photoreduction method to enhance the catalytic activity and selectivity of CO2 for CO preferential oxidation (PROX) in H2-rich stream in detail. X-ray photoelectron spectroscoopy (XPS) results showed that part oxygen vacancies produced on the surface of photoreduced catalysts, which maybe the activity site for the chemisorbed H. Therefore, a possible bi-function reaction mechanism for CO preferential oxidation over the photoreduced Pt/TiO2 catalyst has been proposed.

Key words: CO preferential oxidation, Pt catalyst, Photoreduction, Impregnation


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