期刊
ISCIENCE
卷 17, 期 -, 页码 315-+出版社
CELL PRESS
DOI: 10.1016/j.isci.2019.07.006
关键词
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资金
- National Natural Science Foundation of China [21773069, 21703069, 21703137, 21473057, U1462129, 21273075]
- Key Basic Research Project [18JC1412100]
- Shanghai Pujiang Program from the Shanghai Municipal Science and Technology Commission [17PJ1403100]
- National Key Basic Research Program from the Ministry of Science and Technology of the People's Republic of China [2011CB201403]
CO2 circular economy is urgently calling for the effective large-scale CO2 reutilization technologies. The reverse water-gas shift (RWGS) reaction is the most techno-economically viable candidate for dealing with massive-volume CO2 via downstream mature Fischer-Tropsch and methanol syntheses, but the desired groundbreaking catalyst represents a grand challenge. Here, we report the discovery of a nano-intermetallic InNi3C0.5 catalyst, for example, being particularly active, selective, and stable for the RWGS reaction. The InNi3C0.5(111) surface is dominantly exposed and gifted with dual active sites (3Ni-In and 3Ni-C), which in synergy efficiently dissociate CO2 into CO star (on 3Ni-C) and O-star (on 3Ni-In). O-star can facilely react with 3Ni-C-offered H-star to form H2O. Interestingly, CO star is mainly desorbed at and above 400 degrees C, whereas alternatively hydrogenated to CH3OH highly selectively below 300 degrees C. Moreover, this nano-intermetallic can also fully hydrogenate CO-derived dimethyl oxalate to ethylene glycol (commodity chemical) with high selectivity (above 96%) and favorable stability.
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