含氟阴离子的离子液体（ILs）可以溶解大量制冷剂气体。我们研究小组之前的研究表明，氢原子和周围取代基（H、F、C）的相对位置会显著影响氢氟碳（HFC）溶质分子在离子液体中的溶解度。在本演示中，我们将研究原子取代对一系列二氟甲烷分子（CHF2-X）在离子液体中的溶解度的作用，该溶解度是温度和压力的函数。使用最先进的Hiden重量微量天平获得的气体溶解度和扩散系数测量将证明氢氟碳化合物-离子液体系统的宏观相行为和传输特性。 本演示还将讨论如何使用这些基本测量来设计气体分离过程。引用:2019年年度会议，密苏里州堪萨斯城，扩展摘要

Ionic liquids (ILs) with fluorinated anions can solubilize significant quantities of refrigerant gases. Previous studies by our research group indicate that the relative positions of the hydrogen atom and surrounding substituents (H, F, C) can significantly impact the solubility of hydrofluorocarbon (HFC) solute molecules in ionic liquids. In this presentation, we will investigate the role of atom substitution on the solubility of a series of difluoromethane molecules (CHF2-X) as a function of temperature and pressure in ionic liquids. Gas solubility and diffusion coefficient measurements, obtained using a state of the art Hiden gravimetric microbalance, will demonstrate the macroscopic phase behavior and transport properties of the hydrofluorocarbon – ionic liquid systems. This presentation will additionally discuss how these fundamental measurements can be used to design gas separation processes.