Carbon dioxide separation performance evaluation of amine-based versus choline-based deep eutectic solvents

Xueyi Song, Junjie Yuan, Chen Yang, Gaofeng Deng, Zhichao Wang and Jubao Gao

Renewable and Sustainable Energy Reviews, 2023, vol. 184, issue C

Abstract: Carbon capture technology can address the fundamental causes of carbon dioxide emissions. Deep eutectic solvents stand out among the several existing, due to their tunability, low viscosity, high carbon dioxide absorption, low cost, and environmental friendliness. In this review, the structural characteristics of amine-based deep eutectic solvents are summarized. Next, the physicochemical properties and influencing factors are analyzed. A comparative analysis of the absorption performance of amine-based deep eutectic solvents is carried out, and the regeneration performance is recorded. It is crucial to note that this is the first time data for thermal conductivity has been compiled. Additionally, outstanding amine-based deep eutectic solvents have been selected. Subsequently, we compare amine-based deep eutectic solvents with choline-based deep eutectic solvents. The findings demonstrate that superior amine-based deep eutectic solvents prefer compounds containing chloride ions as hydrogen bond acceptors and alkanolamines with short alkyl chains as donors. The performance of amine-based deep eutectic solvents is extremely comparable to that of choline-based deep eutectic solvents. Specifically in terms of carbon dioxide absorption, viscosity, and melting point, amine-based deep eutectic solvents outperform choline-based deep eutectic solvents for post combustion CO2 capture. Finally, it is concluded that the upcoming primary emphasis of amine-based deep eutectic solvents will consist mostly of research into reaction kinetics and energy consumption, which could offer statistics for the design of reaction devices.

Keywords: Amine; Choline; Deep eutectic solvents; Physicochemical properties; CO2 separation; Performance evaluation (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1016/j.rser.2023.113499

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