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State of the art of ionic liquid-modified adsorbents for CO2 capture and separation |
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| Authors: | Shuang Zheng Shaojuan Zeng Yue Li Lu Bai Yinge Bai Xiangping Zhang Xiaodong Liang Suojiang Zhang |
| Affiliation: | 1. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China Sino-Danish College, University of Chinese Academy of Sciences, Beijing, China Contribution: Conceptualization (lead), Data curation (lead), Investigation (lead), Writing - original draft (lead), Writing - review & editing (lead);2. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China;3. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China College of Chemical Engineering and Environment, China University of Petroleum, Beijing, China Contribution: Data curation (equal), Formal analysis (equal), Investigation (equal), Validation (lead);4. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China Contribution: Formal analysis (equal), Investigation (equal), Visualization (equal);5. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China Contribution: Data curation (equal), Investigation (equal), Visualization (equal);6. Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark;7. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China Contribution: Funding acquisition (equal), Resources (lead), Writing - review & editing (equal) |
| Abstract: | The enormous emission of carbon dioxide (CO2) from industries has triggered a series of environmental issues. In recent years, ionic liquids (ILs) as novel absorbents are widely used for CO2 capture owing to their low vapor pressure and tunable structures. IL-modified adsorbents have the advantages of both ILs and porous supports, such as high CO2 selectivity and high specific surface area, which are novel agents to capture CO2 with broad application prospects. In this review, more than 140 IL-modified adsorbents for CO2 capture in recent years were systematically summarized. The types of ILs including conventional ILs and functionalized ILs on CO2 separation performance of different IL hybrid adsorbents, and their adsorption mechanisms were also discussed. Finally, future perspectives on IL-modified adsorbents for CO2 separation were further posed. |
| Keywords: | adsorption CO2 capture ionic liquids porous materials separation |