Recent advances in carbon dioxide capture and utilization with amines and ionic liquids

• Published in: Green chemical engineering Vol. 1; no. 1; pp. 16 - 32
• Main Authors: Wu, Yuxin, Xu, Jianhong, Mumford, Kathryn, Stevens, Geoffrey W., Fei, Weiyang, Wang, Yundong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2020; KeAi Communications Co. Ltd
• Subjects: Amines; Capture; Carbon dioxide; Cycloaddition; Ionic liquids; Separation; Ionic liquids; Cycloaddition; Separation; Amines; Capture; Carbon dioxide
• ISSN: 2666-9528; 2666-9528
• DOI: 10.1016/j.gce.2020.09.005

Global warming and climate change due to anthropogenic carbon dioxide (CO2) have aroused significant concerns at the global scale due to rapid economic growth in industries and other fields. Therefore, CO2 capture, use, and storage have become particularly important. In this review, general background and methods for CO2 capture and separation, in particular, on ionic liquids (ILs)-based solvents and materials, are discussed. Comprehensive surveys of ILs for CO2 absorption are presented, which focused mainly on experimental researches, and then the concept is extended to functionalized absorbents and recent developments for CO2 capture. Major advantages and disadvantages of amines-based and ILs-based absorbents are discussed in this review. Solutions of traditional amines (MEA, MDEA, DEA, AMP, PZ, etc.) and ILs (conventional ILs, functionalized ILs, etc.) are summarized. Moreover, research progresses on CO2 separation are also introduced focusing mainly on amines and ILs-based membranes (e.g. supported amines membranes, SILMs). Futhermore, the fixation of CO2 into cyclic carbonates catalyzed by ILs (pure ILs, complex catalyst system with ILs, supported ILs, etc.) is summarized, clearly explaining the mechanism of CO2 fixation with ILs. Finally, exploration of some recent studies about CO2 capture and conversion by ILs and challenges for further progress are presented and related suggestions are put forward. •General methods for CO2 capture and separation are discussed, particularly amine and ionic liquids-based solvent and materials.•Ionic liquids used as catalysts for cycloaddition of CO2 are summarized, which is beneficial for understanding the mechanism of CO2 fixation.•Future outlook for CO2 capture, separation and conversion using amine and ionic liquids-based compounds is discussed. [Display omitted]