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Atomic-layered Au clusters on α-MoC as catalysts for the low-temperature water-gas shift reaction

Yao, Siyu ; Zhang, Xiao ; Zhou, Wu ; Gao, Rui ; Xu, Wenqian ; Ye, Yifan ; Lin, Lili ; Wen, Xiaodong ; Liu, Ping ; Chen, Bingbing ; Crumlin, Ethan ; Guo, Jinghua ; Zuo, Zhijun ; Li, Weizhen ; Xie, Jinglin ; Lu, Li ; Kiely, Christopher J. ; Gu, Lin ; Shi, Chuan ; Rodriguez, José A. ; Ma, Ding

Science (American Association for the Advancement of Science), 2017-07, Vol.357 (6349), p.389-393 [Periódico revisado por pares]

United States: American Association for the Advancement of Science

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  • Título:
    Atomic-layered Au clusters on α-MoC as catalysts for the low-temperature water-gas shift reaction
  • Autor: Yao, Siyu ; Zhang, Xiao ; Zhou, Wu ; Gao, Rui ; Xu, Wenqian ; Ye, Yifan ; Lin, Lili ; Wen, Xiaodong ; Liu, Ping ; Chen, Bingbing ; Crumlin, Ethan ; Guo, Jinghua ; Zuo, Zhijun ; Li, Weizhen ; Xie, Jinglin ; Lu, Li ; Kiely, Christopher J. ; Gu, Lin ; Shi, Chuan ; Rodriguez, José A. ; Ma, Ding
  • Assuntos: INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
  • É parte de: Science (American Association for the Advancement of Science), 2017-07, Vol.357 (6349), p.389-393
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    AC02-05CH11231; SC0012704
    BNL-114190-2017-JA
    USDOE Office of Science (SC), Basic Energy Sciences (BES)
  • Descrição: The water-gas shift (WGS) reaction (where carbon monoxide plus water yields dihydrogen and carbon dioxide) is an essential process for hydrogen generation and carbon monoxide removal in various energy-related chemical operations. This equilibrium-limited reaction is favored at a low working temperature. Potential application in fuel cells also requires a WGS catalyst to be highly active, stable, and energy-efficient and to match the working temperature of on-site hydrogen generation and consumption units. We synthesized layered gold (Au) clusters on a molybdenum carbide (α-MoC) substrate to create an interfacial catalyst system for the ultralow-temperature WGS reaction. Water was activated over α-MoC at 303 kelvin, whereas carbon monoxide adsorbed on adjacent Au sites was apt to react with surface hydroxyl groups formed from water splitting, leading to a high WGS activity at low temperatures.
  • Editor: United States: American Association for the Advancement of Science
  • Idioma: Inglês
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