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Alkylamine-Tethered Stable Metal–Organic Framework for CO2 Capture from Flue Gas

Authors

  • Yingli Hu,

    1. Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P.R. China)
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  • Wolfgang M. Verdegaal,

    1. Sunfire GmbH, Gasanstaltstraße 2, 01237 Dresden (Germany)
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  • Prof. Dr. Shu-Hong Yu,

    1. Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P.R. China)
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  • Prof. Dr. Hai-Long Jiang

    Corresponding author
    1. Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P.R. China)
    • Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P.R. China)

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Abstract

Different alkylamine molecules were post-synthetically tethered to the unsaturated CrIII centers in the metal–organic framework MIL-101. The resultant metal–organic frameworks show almost no N2 adsorption with significantly enhanced CO2 capture under ambient conditions as a result of the interaction between amine groups and CO2 molecules. Given the extraordinary stability, high CO2 uptake, ultrahigh CO2/N2 selectivity, and mild regeneration energy, MIL-101-diethylenetriamine holds exceptional promise for post-combustion CO2 capture and CO2/N2 separation.

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