【摘 要】
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Direct converting carbon dioxide into hydrocarbon fuels and value-added chemicals would offer a very attractive approach for efficient utilization of CO2 as a c
【机 构】
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National Engineering Laboratory for Methanol to Olefins,Dalian Institute of Chemical Physics,Chinese
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Direct converting carbon dioxide into hydrocarbon fuels and value-added chemicals would offer a very attractive approach for efficient utilization of CO2 as a carbon resource.Although,olefins,aromatics and gasoline have been successfully synthesized by CO2 hydrogenation,highly selective conversion of CO2 and H2 into C2+hydrocarbon is still challenging due to a high C-C coupling barrier and inhibiting the production of other long-chain hydrocarbons.Here,we report a composite catalyst made of InZrOx and SSZ-13 molecular sieve(InZrOx+SSZ-13),which exhibits 74.5％propane selectivity at 623 K.The 8-MR micropores and the higher strength of the acid for SSZ-13 benefit the formation of propane.Compared with pure InOx and m-ZrO2,the composite oxide InZrOx containing more oxygen vacancies,exhibits to be more readily reduced by H2 and easier to adsorb and desorb CO2 within the reaction tem-perature.All those could be beneficial to the activation and conversion of H2 and CO2.The catalytic per-formance of InZrOx+SSZ-13 in CO2 hydrogenation provides a potential for production of propane.
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