Atomic-layered Au clusters on α-MoC as catalysts for the low-temperature water-gas shift reaction
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- Peking Univ., Beijing (China)
- Dalian Univ. of Technology, Dalian (China)
- Univ. of Chinese Academy of Sciences, Beijing (China); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Chinese Academy of Sciences, Shanxi (China); Synfuels China, Beijing (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Taiyuan Univ. of Technology, Shanxi (China)
- Lehigh Univ., Bethlehem, PA (United States)
- Chinese Academy of Sciences (CAS), Beijing (China)
Here, 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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-05CH11231; SC0012704
- OSTI ID:
- 1411142
- Alternate ID(s):
- OSTI ID: 1418304
- Report Number(s):
- BNL--114190-2017-JA; KC0302010
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6349 Vol. 357; ISSN 0036-8075
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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