Amino acid ionic liquids (AAILs) are chemical solvents with high reactivity to CO₂. However, they suffer from drastic increase in viscosity on the reaction with CO₂, which significantly limits their application in the industrial capture of CO₂. In this work, 1-ethyl-3-methylimidazolium acetate ([emim][Ac]) which also exhibits chemical affinity to CO₂ but low viscosity, and its viscosity does not increase drastically after CO₂ absorption, was proposed as the diluent for AAILs to fabricate hybrid materials. The AAIL+[emim][Ac] hybrids were found to display enhanced kinetics for CO₂ absorption, and their viscosity increase after CO₂ absorption are much less significant than pure AAILs. More importantly, owing to the fact that [emim][Ac] itself can absorb large amount of CO₂, the AAIL+[emim][Ac] hybrids still have high absolute capacities of CO₂. Such hybrid materials consisting of a chemical solvent plus another chemical solvent are believed to be a class of effective absorbents for CO₂ capture. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译：

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化学溶剂中的化学溶剂：一类有效捕获二氧化碳的杂化材料

氨基酸离子液体（AAIL）是对CO ₂具有高反应活性的化学溶剂。然而，它们在与CO ₂反应时粘度急剧增加，这极大地限制了它们在工业捕获CO _{2中的应用}。在这项工作中，有人提出将乙酸1-乙基-3-甲基咪唑鎓乙酸盐（[emim] [Ac]）表现出对CO _2的化学亲和力，但粘度低，并且在吸收CO ₂后其粘度不会急剧增加。用于制造混合材料的AAIL。发现AAIL + [emim] [Ac]杂化物表现出增强的CO ₂吸收动力学，并且在CO ₂后其粘度增加吸收远不如纯AIL显着。更重要的是，由于[emim] [Ac]本身可以吸收大量CO ₂，因此AAIL + [emim] [Ac]杂种仍然具有很高的CO ₂绝对容量。这种由化学溶剂和另一种化学溶剂组成的杂化材料被认为是一类有效的CO ₂吸收吸收剂。©2017美国化学工程师学会AIChE J，2017