Hollow MOF capsule encapsulated amino-functionalized ionic liquid for excellent CO2 catalytic conversion |
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Authors: | Bo-Yun Liu Min-Jie Chen Liang Yang Bo Zhao Tao Xia Gang-Gang Chang |
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Affiliation: | 1. School of Power Engineering, Naval University of Engineering, Wuhan 430033, China;2. School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China |
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Abstract: | The engineering of highly efficient and stable heterogeneous catalysts for catalytic conversion of CO2 to high value-added products is highly desirable but presents a great challenge. Herein, we reported the synthesis of a series of multifunctional IL@H-Zn/Co-ZIF composite catalysts with a unique porous hollow capsule structure and encapsulated amino-functionalized ionic liquids (ILs). The unique hollow capsule structure of IL@H-Zn/Co-ZIF provides sufficient space for loading active ILs (C2NH2Mim+]Br-]) and fast mass transfer of substrate molecules during catalysis. Furthermore, the microporous Zn-ZIF shell can effectively avoid the leaching of active ILs. Benefiting from the unique hollow structure, the resultant IL@H-Zn/Co-ZIF demonstrated excellent catalytic performance (>95% yield), and good recyclability (still remained about 90% activities after 5 cycles) when applied in the CO2 cycloaddition reaction under solvent and co-catalyst free conditions. |
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Keywords: | MOFs Catalyst Hollow capsule CO2 capture Ionic liquids |
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