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Citation: Xuejun Xu, Qiang Fu, Xinhe Bao. MoOx-promoted Pt catalysts for the water gas shift reaction at low temperatures[J]. Chinese Journal of Catalysis, ;2015, 36(5): 750-756. doi: 10.1016/S1872-2067(14)60294-1 shu

MoOx-promoted Pt catalysts for the water gas shift reaction at low temperatures

  • 1.

    a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;

  • Corresponding author: Qiang Fu,  Xinhe Bao, 
  • Received Date: 15 December 2014
    Available Online: 19 January 2015

    Fund Project: 国家自然科学基金(21222305, 21321001, 21103181) (21222305, 21321001, 21103181) 国家重点基础研究发展计划(973计划, 2013CB834603, 2013CB933100, 2011CBA00503). (973计划, 2013CB834603, 2013CB933100, 2011CBA00503)

  • Pt-Mo/SiO2 catalysts were prepared using impregnation-reduction methods. Mo-promoted Pt catalysts exhibit much higher water gas shift reaction activity at low temperatures than Pt/SiO2 catalysts. Various characterization methods including inductive coupled plasma atomic emission spectrometry, X-ray diffraction, transmission electron microscopy, X-ray absorption near edge spectrum, and X-ray photoelectron spectroscopy were applied to investigate the composition, structure and chemical state of the Pt-Mo/SiO2 catalysts. Our results indicate that the added Mo species effectively improves the dispersion of Pt nanoparticles and the synergistic effect between the Pt nanoparticles and surface MoOx species enhances the catalytic performance for the water gas shift reaction. Pt nanoparticles decorated with highly dispersed MoOx patches are found to be the active architecture.
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