深共晶溶剂
氯化胆碱
共晶体系
化学
溶剂
胺气处理
无水的
吸收(声学)
叔胺
无机化学
核化学
有机化学
材料科学
复合材料
合金
作者
Xiangwei Liu,Ao Qian,Shengyou Shi,Shuie Li
标识
DOI:10.1088/2053-1591/ac47c6
摘要
Abstract The existing CO 2 absorption by deep eutectic solvents is limited by the unavoidable water absorption problem during use. In this study, we prepared three deep eutectic solvents with different alcohol aminations and added different water contents to discuss the effect of water content on the absorption of carbon dioxide by deep eutectic solvents. All deep eutectic solvents have a low melting point at room temperature as a liquid and have high thermal stability, where the choline chloride-diethanolamine deep eutectic solvents have a high viscosity. Anhydrous choline chloride-monoethanolamine deep eutectic solvents have the largest CO 2 absorption, reaching 0.2715 g g −1 , and the absorption of CO 2 by anhydrous choline chloride-N-methyldiethanolamine deep eutectic solvents is only 0.0611 g g −1 . Water content inhibited the absorption of CO 2 in primary amine and secondary amine systems, whereas it enhanced the absorption of CO 2 in tertiary amine systems, which was related to the reaction process of deep eutectic solvent and CO 2 .
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