离子液体/金属有机框架复合材料捕集分离CO_(2)

CO_(2)capture and separation by ionic liquid-metal organic framework composite materials

由于全球气候变化加剧和极端天气的增加,CO_(2)捕集分离已经不单单具有重要的战略意义,更关乎人类的生存。近年来,用于捕集分离CO_(2)的新型材料层出不穷,其中,离子液体(ionic liquids,ILs)具有可调变的化学结构和独特的物理化学性质,例如低挥发性、高热稳定性和较好的溶解性,从而引起了广泛关注。同时,金属有机框架结构材料(metal-organic frameworks,MOFs)在CO_(2)捕集分离方面也表现出优异性能。基于此,本文总结了ILs与MOFs相结合的ILs/MOFs复合材料捕集分离CO_(2)的研究进展,主要包括ILs负载于MOFs材料和对MOFs进行改性的吸附分离、MOFs材料分散于ILs中形成多孔液体的吸收分离、膜分离等方法的研究现状,同时,深入探讨了各方法的优点和不足之处,并对ILs/MOFs复合材料在CO_(2)捕集分离中的应用前景和发展趋势进行了展望。

Due to the worsening global climate change and the increasing extreme weather events,CO_(2)capture and separation has important strategic significance and relates to human survival.In recent years,new materials for CO_(2)capture and separation have emerged.Among them,ionic liquids(ILs),as a new alternative to organic solvents,have received tremendous interest due to the tunable chemical structures and unique physicochemical properties,such as low volatility,high thermal stability and excellent solubility.And metal-organic frameworks(MOFs)have also been considered as fascinating porous materials for CO_(2)capture and separation.In this paper,the research progress of CO_(2)capture and separation by ILs/MOFs composites is summarized.The adsorptive separation via MOFs-supported ILs,ILs-modified MOFs,dispersing MOFs in ILs to form porous liquids,and membrane separation are all discussed,as well as the advantages and disadvantages of each method.In addition,the application prospect and development of ILs/MOFs composites in CO_(2)capture and separation are also discussed.