Journal
ACS CATALYSIS
Volume 8, Issue 4, Pages 3194-3201Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.7b03404
Keywords
metal-organic framework; ionic liquid; heterogeneous catalysis; carbon dioxide fixation; cyclic carbonate
Categories
Funding
- National Research Fund for Fundamental Key Project [2014CB931803]
- NSFC [21725101, 21673213, 21521001]
- Recruitment Program of Global Youth Experts
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The rational integration of multiple functional components into a composite material could result in enhanced activity tailored for specific applications. Herein, imidazolium-based poly(ionic liquids (denoted as polylLs) have been confined into the metal organic framework (MOF) material MIL-101 via in situ polymerization of encapsulated monomers. The resultant composite polyILs@MIL-101 exhibits good CO2 capture capability that is beneficial for the catalysis of the cydoaddition of CO2 with epoxides to form cyclic carbonates at subatmospheric pressure in the absence of any cocatalyst. The significantly enhanced activity of polylLs@MIL-101, compared to either MIL-101 or polylLs, is attributed to the synergistic effect among the good CO2 enrichment capacity, the Lewis acid sites in the MOF, as well as the Lewis base sites in the polylLs.
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