Citation: Xuejun Xu, Qiang Fu, Xinhe Bao. MoO_x-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

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

Xuejun Xu ^a,b ,
Qiang Fu ^a,, ,
Xinhe Bao ^a,,

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 MoO_x species enhances the catalytic performance for the water gas shift reaction. Pt nanoparticles decorated with highly dispersed MoO_x patches are found to be the active architecture.
- Water gas shift reaction,
- Platinum,
- Molybdenum oxide,
- Synergistic effect,
- Interface catalysis
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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

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通讯作者: 陈斌, bchen63@163.com

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