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Acid–Base-Resistant Metal–Organic Framework for Size-Selective Carbon Dioxide Capture

Dong WuState Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, ChinaCaiping LiuState Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, ChinaJia‐Yue TianFujian Institute of Research on the Structure of MatterFeilong JiangFujian Institute of Research on the Structure of MatterDaqiang YuanState Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, ChinaQihui ChenState Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, ChinaMaochun HongDepartment of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China

2020en

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ABI

Annotatsiya

The development of practical porous materials for the selective capture of CO2 from flue gas and crude biogas is highly critical for both environment protection and energy safety. Here, a novel metal–organic framework (FJI-H29) has been prepared, which not only has excellent acid–base resistance but also possesses polar micropores (3.4–4.3 Å) that can match CO2 molecules well. FJI-H29 can selectively capture CO2 from N2 and CH4 with excellent separation efficiency and suitable adsorption enthalpy under ambient conditions. Breakthrough experiments further confirm its practicability for both CO2/N2 and CO2/CH4 separation. All of these confirm FJI-H29 is a practical CO2 adsorbent. Modeling calculations reveal that the confinement effect of micropores and the polar environment synergistically promotes the selective adsorption of CO2, which will provide a potential strategy for the synthesis of a practical metal–organic framework for CO2 capture.

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DOI: 10.1021/acs.inorgchem.0c01912

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