期刊
NATURE CHEMISTRY
卷 9, 期 10, 页码 1019-1024出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NCHEM.2794
关键词
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资金
- National Natural Science Foundation of China [21503260, 21573271, 91545112, 11227902]
- Shanghai Municipal Science and Technology Commission, China [14DZ1207602, 16DZ1206900, 15DZ1170500]
- Ministry of Science and Technology of China [2016YFA0202802]
- Chinese Academy of Sciences [QYZDB-SSW-SLH035]
Although considerable progress has been made in carbon dioxide (CO2) hydrogenation to various C-1 chemicals, it is still a great challenge to synthesize value-added products with two or more carbons, such as gasoline, directly from CO2 because of the extreme inertness of CO2 and a high C-C coupling barrier. Here we present a bifunctional catalyst composed of reducible indium oxides (In2O3) and zeolites that yields a high selectivity to gasoline-range hydrocarbons (78.6%) with a very low methane selectivity (1%). The oxygen vacancies on the In2O3 surfaces activate CO2 and hydrogen to form methanol, and C-C coupling subsequently occurs inside zeolite pores to produce gasoline-range hydrocarbons with a high octane number. The proximity of these two components plays a crucial role in suppressing the undesired reverse water gas shift reaction and giving a high selectivity for gasoline-range hydrocarbons. Moreover, the pellet catalyst exhibits a much better performance during an industry-relevant test, which suggests promising prospects for industrial applications.
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