Solubilities of R-161 and R-143a in 1-Hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide

Gaseous absorption of fluorinated ethanes by ionic liquids

“…The solubilities increase with the increasing of pressure and decrease with the increasing of temperature. In order to investigate [21,22], indicating that replacing some hydrogen atoms of ethane by fluorine atoms will increase its solubility in ionic liquids. This phenomenon may due to the hydrogen bonds interactions between the fluorine atoms of the HFCs and the hydrogen atoms of ionic liquids.…”

“…The change in the mass of gas yields the solubility of gas in the solvent. A detailed description of apparatus and experimental procedure were given in our previous papers [21,22], we just give a brief introduction in this work. The apparatus mainly consists of the equilibrium cell, the gas reservoir, the magnetic stirrer and the temperature and pressure sensors.…”

“…Recently, lots of work have been carried out on the solubility behaviors of hydrofluorocarbons (HFCs) in ionic liquids which are important for applying ionic liquids + HFCs as working pairs for the absorption refrigeration cycles [2][3][4] or using ionic liquids as solvents for separation of hydrofluorocarbon mixtures [5]. Most of these work are on the solubilities of HFCs in imidazolium-based ionic liquids [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. There are little experimental data for the solubilities of HFCs in phosphonium-based ionic liquids although phosphonium-based ionic liquids have some advantages such as high thermal stability and low cost.…”

What data are most valuable to screen ionic liquid entrainers for hydrofluorocarbon refrigerant reuse and recycling?

“…12,[42][43][44] Other convenient properties of ILs include their existence in a liquid state over a wide temperature range and their high thermal and chemical stability. [45][46][47][48] Since the feasibility of using ILs in extractive distillation schemes 10,11 was shown in the early 2000s, many studies have evaluated their properties in mixtures with fluorinated refrigerants [13][14][15][16][17][18][19][20][21][22][23] and examined their use in HFC separations. 12,24 ILs have also been the subject of computer-aided molecular design research, which has aimed to take advantage of their tunability to simultaneously design IL entrainers and optimize the separation processes in which they are used.…”

“…Ionic liquid (IL) entrainers can effectively separate HFC mixtures, overcoming the energy costs of traditional separation technologies. [10][11][12] Over the past eighteen years, IL and HFC systems have been studied in a variety of contexts including the characterization of their individual and mixture physical properties [13][14][15][16][17][18][19][20][21][22][23] and their use in extractive distillation, membrane, and adsorption separation processes. 11 More recent work has used data generated from these studies to regress thermodynamic models then perform process design, optimization, technoeconomic analyses, and life cycle assessments for IL-enabled HFC separation schemes.…”