![]() ![]() Scarcely available results of molecular simulations, which is a valuable tool in designing and evaluating ionic liquids, are also reviewed. Recent developments on task-specific ionic liquids and supported ionic liquid membranes are also discussed. The effect of anions, cations, and functional groups on the CO 2 solubility, biodegradability, and toxicity of the ionic liquids are highlighted. ![]() A major part of this review includes an overview of the experimental data of CO 2 solubility, selectivity, and diffusivity in different ionic liquids. The aim of the present review paper is to provide a detailed overview of the achievements and difficulties that has been encountered in finding a suitable ionic liquid for CO 2 capture from flue-gas streams. This remarkable interest has led to a rapid growth of literature on this specific subject. Ionic liquids have been proposed as a promising alternative to the conventional volatile solvents, because of their low volatility and other interesting properties. Currently, CO 2 capture is dominated by amine-based (e.g., monoethanolamine) technologies, which are very energy intensive and less attractive from an environmental point of view due to emissions of the used volatile solvent components. Economical and environmental aspects are the main motivation for research on energy efficient processes and the search for environment friendly materials for CO 2 capture. ![]()
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