Chinese Journal of Catalysis ›› 2018, Vol. 39 ›› Issue (8): 1366-1372.DOI: 10.1016/S1872-2067(18)63103-1

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Understanding the promotional effect of Au on Pt/WO3 in hydrogenolysis of glycerol to 1,3-propanediol

Chaojun Yanga,b, Fan Zhanga,b, Nian Leia,b, Man Yanga,b, Fei Liua, Zhili Miaoa, Yongnan Suna, Xiaochen Zhaoa, Aiqin Wanga   

  1. a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-04-06 Revised:2018-05-07 Online:2018-08-18 Published:2018-07-04
  • Contact: 10.1016/S1872-2067(18)63103-1
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21690080, 21690084, 21721004, 21673228), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB17020100), and the National Key Projects for Fundamental Research and Development of China (2016YFA0202801).

Abstract:

Pt/Au/WO3 bimetallic catalysts were prepared by impregnation of Pt onto preformed Au/WO3, obtained by a hexadecyl trmethyl ammonium bromide (CTAB)-assisted one-pot synthesis method. The resulting Pt/Au/WO3 catalysts exhibited remarkable synergistic effects for selective hydrogenolysis of glycerol to 1,3-propanediol. The characterization results showed that doping of Au promoted the reduction of both Pt and W at low temperatures and uniform dispersion of Pt on the WO3 support. Furthermore, more low-valence Pt species were produced on the WO3 surface after introduction of Au. These changes in electronic properties resulted in enhancement of both glycerol conversion and selectivity for 1,3-propanediol.

Key words: Bimetallic, Pt/Au/WO3, Glycerol, 1,3-Propanediol, Hydrogenolysis