Abstract
As one of promising advanced solvents, ionic liquids (ILs) have become more attractive for CO2 capture due to their unique properties, special structures and potential energy saving efficiency. This chapter mainly reviews the research progress on CO2 capture with ILs, focusing on the CO2 absorption capacity of conventional ILs, task-specific ILs and ILs based mixtures as well as the comparison and analysis. The influence of cations, anions and functional groups of ILs on the CO2 absorption was analyzed and the mechanisms of physisorption and chemisorption were revealed using experimental test and molecular simulation results. Especially considering the real applications of the new ILs-based capture technologies, the research on process simulation and assessment of CO2 capture processes was also reviewed. Finally, we discussed the challenges and opportunities of transferring the lab-scale research results to practical industries processes, and also present some perspectives of ILs based novel technologies.
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Acknowledgments
This work was supported by the National Natural Science Fund for Distinguished Young Scholars (No. 21425625), the National Natural Science Foundation of China (No. 51574215, 21506219), the International S&T Cooperation Program of China (No. 2014DFA61670), and the External Cooperation Program of BIC, Chinese Academy of Sciences (No. l22111KYS820150017).
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Zhang, X., Bai, L., Zeng, S., Gao, H., Zhang, S., Fan, M. (2017). Ionic Liquids: Advanced Solvents for CO2 Capture. In: Budzianowski, W. (eds) Energy Efficient Solvents for CO2 Capture by Gas-Liquid Absorption. Green Energy and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-47262-1_7
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