期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 137, 期 32, 页码 10104-10107出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b06150
关键词
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资金
- U.S. Department of Energy, Office of Science [DE-AC02-98CH10886]
- U.S. DOE Office of Science User Facilities at Brookhaven National Laboratory [DE-SC0012704]
- Office of Science of the US Department of Energy [DE-AC02-05CH11231]
Capture and recycling of CO2 into valuable chemicals such as alcohols could help mitigate its emissions into the atmosphere. Due to its inert nature, the activation of CO2 is a critical step in improving the overall reaction kinetics during its chemical conversion. Although pure gold is an inert noble metal and cannot catalyze hydrogenation reactions, it can be activated when deposited as nanoparticles on the appropriate oxide support. In this combined experimental and theoretical study, it is shown that an electronic polarization at the metal-oxide interface of Au nanoparticles anchored and stabilized on a CeOx/TiO2 substrate generates active centers for CO2 adsorption and its low pressure hydrogenation, leading to a higher selectivity toward methanol. This study illustrates the importance of localized electronic properties and structure in catalysis for achieving higher alcohol selectivity from CO2 hydrogenation.
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