Recent development of ionic liquid membranes

The interest in ionic liquids (IL) is motivated by its unique properties, such as negligible vapor pressure, thermal stability, wide electrochemical stability window, and tunability of properties. ILs have been highlighted as solvents for liquid-liquid extraction and liquid membrane separation. To further expand its application in separation field, the ionic liquid membranes (ILMs) and its separation technology have been proposed and developed rapidly. This paper is to give a comprehensive overview on the recent applications of ILMs for the separation of various compounds, including organic compounds, mixed gases, and metal ions. Firstly, ILMs was classified into supported ionic liquid membranes (SILMs) and quasi-solidified ionic liquid membranes (QSILMs) according to the immobilization method of ILs. Then, preparation methods of ILMs, membrane stability as well as applications of ILMs in the separation of various mixtures were reviewed. Followed this, transport mechanisms of gaseous mixtures and organic compounds were elucidated in order to better understand the separation process of ILMs. This tutorial review intends to not only offer an overview on the development of ILMs but also provide a guide for ILMs preparations and applications. (C) 2016, Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

离子液体（IL）因其独特的性质而备受关注，例如可忽略不计的蒸气压、热稳定性、宽的电化学稳定窗口以及性质的可调节性。离子液体已被强调作为液 - 液萃取和液膜分离的溶剂。为了进一步扩大其在分离领域的应用，离子液体膜（ILMs）及其分离技术已被提出并迅速发展。本文旨在全面综述离子液体膜在各种化合物分离方面的近期应用，包括有机化合物、混合气体和金属离子。首先，根据离子液体的固定方法，离子液体膜被分为支撑离子液体膜（SILMs）和准固化离子液体膜（QSILMs）。然后，综述了离子液体膜的制备方法、膜稳定性以及离子液体膜在各种混合物分离中的应用。接着，阐明了气体混合物和有机化合物的传输机制，以便更好地理解离子液体膜的分离过程。这篇指导性综述不仅旨在概述离子液体膜的发展，还为离子液体膜的制备和应用提供指导。（C）2016，中国科学院过程工程研究所。由爱思唯尔出版服务公司代表科爱传播有限公司出版。