Chemical solvent in chemical solvent: A class of hybrid materials for effective capture of CO2
Chemical solvent in chemical solvent: A class of hybrid materials for effective capture of CO2
复制标题
化学溶剂中的化学溶剂：一类有效捕获CO2的杂化材料
DOI：
10.1002/aic.15952
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发表时间：
2018-02-01
期刊：
影响因子：
3.7
通讯作者：
Tao, Duan-Jian
中科院分区：
文献类型：
--
作者：
Chen, Feng-Feng;Huang, Kuan;Tao, Duan-Jian
氨基酸离子液体（AAILs）是一种对CO2具有高反应性的化学溶剂。然而，它们在与二氧化碳反应时粘度急剧增加，这极大地限制了它们在工业捕集二氧化碳中的应用。本文提出了1-乙基-3-甲基咪唑醋酸盐（[emim][Ac]）作为AAILs制备杂化材料的稀释剂，该材料对CO2也具有化学亲和性，但粘度较低，吸收CO2后粘度不会急剧增加。结果表明，AAIL+[emim][Ac]复合材料对CO2的吸收动力学增强，其吸附后的粘度增加幅度远小于纯AAIL。更重要的是，由于[emim][Ac]本身可以吸收大量的CO2，因此AAIL+[emim][Ac]混合动力车仍然具有很高的CO2绝对容量。这种由一种化学溶剂和另一种化学溶剂组成的混合材料被认为是一类有效的CO2捕获吸收剂。©2017美国化学工程师学会学报，64:632-639,2018
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, 64: 632–639, 2018