CO2 capture with Ionic liquids (ILs) and Deep Eutectic Solvents (DESs): a new generation of sorbents
Number of Authors: 3
2016 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564XArticle in journal (Refereed) Epub ahead of print
High cost and high energy penalty for carbon dioxide (CO2) uptake from flue gases are important obstacles in large-scale industrial applications, and developing efficient technology for CO2 capture from technic and economic points is crucial. Ionic liquids (ILs) show the potential for CO2 separation due to their inherent advantages and have been proposed as alternatives in order to overcome the drawbacks of conventional sorbents. Chemical modification of ILs to improve their performance in CO2 absorption has received more attention. Deep eutectic solvents (DESs) as a new generation of ILs are considered as more economical alternatives to cope with the deficiencies of high cost and high viscosity of conventional ILs. This review discusses the potential of the functionalized ILs and DESs as CO2 sorbents. Incorporation of CO2-philic functional groups like amine in cation and/or anion moiety of ILs can be promoted their absorption capacity. In general, the functionalization of anion part of ILs is more effective than cation part. DESs represent favourable solvent properties and are capable of capturing CO2, but the research work is scarce and undeveloped compared to the studies conducted on ILs. It is possible to develop novel DESs with promising absorption capacity. However, more investigation needs to be carried out on the mechanism of CO2 sorption of DESs to clarify how these novel sorbents can be adjusted and fine-tuned to best tailored as optimized media for CO2 capture.
Place, publisher, year, edition, pages
Engineering and Technology Energy Engineering
Research subject Energy Engineering
IdentifiersURN: urn:nbn:se:ltu:diva-60742DOI: 10.1002/cssc.201600987PubMedID: 27906508OAI: oai:DiVA.org:ltu-60742DiVA: diva2:1050262