Deep Eutectic Solvents: Physicochemical Properties and Gas Separation Applications
Deep Eutectic Solvents: Physicochemical Properties and Gas Separation Applications
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DOI：
10.1021/ef5028873
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发表时间：
2015-04-01
期刊：
影响因子：
5.3
通讯作者：
Atilhan, Mert
中科院分区：
文献类型：
--
作者：
Garcia, Gregorio;Aparicio, Santiago;Atilhan, Mert
应用于与能源有关的应用的可持续技术应在今后几十年发挥关键作用。特别是，从化石燃料发电厂排放的烟道气中捕获二氧化碳应在控制和减少温室效应方面发挥关键作用。因此，以碳捕获为目的的新材料的开发已经合并为中心研究路线，为此提出了许多替代方案。离子液体（ILs）已成为最有前途的碳捕获选择之一，但尽管它们具有很好的性能，但也出现了一些严重的缺点。深度共晶溶剂（DESs）最近被认为是il的替代品，它既保持了il的大部分相关特性，如特定任务特性，同时又避免了il的一些问题，主要是从经济和环境的角度来看。从低成本和天然来源生产DES，加上它们几乎零毒性和完全生物降解性，使这些溶剂成为在绿色化学框架内开发气体分离剂的合适平台。因此，鉴于DESs作为二氧化碳吸收剂和气体分离剂的良好特性，本文讨论了DESs的理化性质及其对气体分离机理的影响以及DESs中气体溶解度研究的最新进展。本综述旨在分析目前关于DESs气体分离的知识，比较DESs与ILs的捕集能力和特性，推断DESs的优缺点，并提出未来的研究方向。
Sustainable technologies applied to energy-related applications should develop a pivotal role in the next decades. In particular, carbon dioxide capture from flue gases emitted by fossil-fueled power plants should play a pivotal role in controlling and reducing the greenhouse effect. Therefore, the development of new materials for carbon capture purposes has merged as central research line, for which many alternatives have been proposed. Ionic liquids (ILs) have emerged as one of the most promising choices for carbon capture, but in spite of their promising properties, some serious drawbacks have also appeared. Deep eutectic solvents (DESs) have recently been considered as alternatives to ILs that maintain most of their relevant properties, such as task-specific character, and at the same time avoid some of their problems, mainly from economic and environmental viewpoints. DES production from low-cost and natural sources, together with their almost null toxicity and total biodegradability, makes these solvents a suitable platform for developing gas separation agents within the green chemistry framework. Therefore, because of the promising characteristics of DESs as CO2 absorbents and in general as gas separating agents, the state of the art on physicochemical properties of DESs in relationship to their influence on gas separation mechanisms and on the studies of gas solubility in DESs are discussed. The objective of this review work is to analyze the current knowledge on gas separation using DESs, comparing the capturing abilities and properties of DESs with those of ILs, inferring the weaknesses and strengths of DESs, and proposing future research directions on this subject.