Gaseous absorption of fluorinated ethanes by ionic liquids

Liu, Xiang Yang; Qi, Xuetao; Lv, Nan; He, Maogang

doi:10.1016/j.fluid.2015.07.001

Cited by 26 publications

(20 citation statements)

References 29 publications

(41 reference statements)

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“…Solubility measurements were carried out using an isochoric saturation method as described in previous publications. , The experimental system is shown in Figure . The dissolution process was carried out in an equilibrium cell with known volume.…”

Section: Methodsmentioning

confidence: 99%

Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf₂N] and R1234ze(E)/[HMIM][Tf₂N] Working Pairs for the Absorption Refrigeration Cycle

Bai

Liu

et al. 2016

J. Chem. Eng. Data

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The solubilities of 2,3,3,3-tetrafluoropropylene (R1234yf) and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) in 1hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf 2 N]) were measured at temperatures from 293 to 353 K and at pressures up to 925 kPa. A comparison of the solubilities of R1234yf, R1234ze(E), and hydrofluorocarbons in [HMIM][Tf 2 N] was conducted and showed that the solubilities of R1234yf and R1234ze(E) are comparable to those of hydrofluorocarbons but more sensitive to temperature. The solubilities of R1234yf and R1234ze(E) in [HMIM][Tf 2 N] were correlated well with a modified Krichevsky− Kasarnovsky equation and the NRTL equation.

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Section: Methodsmentioning

confidence: 99%

Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf₂N] and R1234ze(E)/[HMIM][Tf₂N] Working Pairs for the Absorption Refrigeration Cycle

Bai

Liu

et al. 2016

J. Chem. Eng. Data

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“…[8][9][10] The use of ILs as entrainers has been proposed to allow for the separation of azeotropic or close-boiling point blends of refrigerant gases, [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] and as working fluids in absorption refrigeration systems. [25][26][27][28][29][30][31][32][33][34] The efficient separation of refrigerant blends would promote a more circular economy in the RAC sector, whereby HFCs and HFOs recovered from end-of-life equipment are used to formulate novel low GWP blends. 35 In this sense, ILs provide several benefits over conventional molecular solvents in the design of separation processes because solvent evaporation is avoided, and they are not flammable nor corrosive and do not release toxic vapors.…”

Section: Introductionmentioning

confidence: 99%

Vapor–Liquid Equilibria and Diffusion Coefficients of Difluoromethane, 1,1,1,2-Tetrafluoroethane, and 2,3,3,3-Tetrafluoropropene in Low-Viscosity Ionic Liquids

et al. 2020

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The phase-down of hydrofluorocarbons (HFCs) established by the Kigali Amendment to the Montreal Protocol is leading to the formulation and commercialization of new refrigerant blends containing hydrofluoroolefins (HFOs), such as 2,3,3,3-tetrafluoropropene (R1234yf), and HFCs with moderate global warming potential, namely, difluoromethane (R32 ) and 1,1,1,2tetrafluoroethane (R134a). Moreover, the recycling of refrigerants is attracting attention as a means to reduce the amount of new HFCs produced and their release to the environment. To that end, the use of ionic liquids has been proposed as entrainers to separate refrigerants with close-boiling points or azeotropic blends. Thus, the vapor-liquid equilibria and diffusion coefficients of the refrigerant-ionic liquid pairs formed by R32 +studied using an isochoric saturation method at temperatures ranging from 283.15 to 323.15 K and pressures up to 0.9 MPa. In addition, the solubility behavior is successfully modeled using the non-random two-liquid activity coefficient method, and the Henry's law constants at infinite dilution, solvation energies and infinite dilution activity coefficients are calculated.

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“…Hydrofluorocarbon (HFC) refrigerants with ILs as working pairs for the absorption cycle have been investigated extensively in the past few years. − Recently, R1234ze(E) was proposed as a potential substitution for HFCs, especially for R134a . Hence, the possibility of R1234ze(E) + ILs pairs used in the absorption refrigeration systems deserves investigation.…”

Section: Introductionmentioning

confidence: 99%

Phase Equilibria of trans-1,3,3,3-Tetrafluoropropene with Three Imidazolium Ionic Liquids

et al. 2017

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In recent years, trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) was proposed as a possible replacement for hydrofluorocarbons. In this work, the vapor−liquid phase equilibrium of R1234ze(E) with three imidazolium ionic liquids (ILs) were measured from (283.15 to 343.15) K based on the isochoric method. The ILs include 1-ethyl-3-methylimidazolium tetrafluoroborate ([Emim][BF 4 ]), 1-hexyl-3-methylimidazolium tetrafluoroborate ([Hmim][BF 4 ]), and 1-octyl-3-methylimidazolium tetrafluoroborate ([Omim][BF 4 ]). The experimental results were correlated using the nonrandom two-liquid activity coefficients model. The deviations between experimental data and calculated values for pressure were 1.77%, 2.07%, and 2.32% for R1234ze(E) + [Emim][BF 4 ], + [Hmim][BF 4 ], and + [Omim]-[BF 4 ] systems, respectively.

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Gaseous absorption of fluorinated ethanes by ionic liquids

Cited by 26 publications

References 29 publications

Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf₂N] and R1234ze(E)/[HMIM][Tf₂N] Working Pairs for the Absorption Refrigeration Cycle

Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf₂N] and R1234ze(E)/[HMIM][Tf₂N] Working Pairs for the Absorption Refrigeration Cycle

Vapor–Liquid Equilibria and Diffusion Coefficients of Difluoromethane, 1,1,1,2-Tetrafluoroethane, and 2,3,3,3-Tetrafluoropropene in Low-Viscosity Ionic Liquids

Phase Equilibria of trans-1,3,3,3-Tetrafluoropropene with Three Imidazolium Ionic Liquids

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Gaseous absorption of fluorinated ethanes by ionic liquids

Cited by 26 publications

References 29 publications

Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf2N] and R1234ze(E)/[HMIM][Tf2N] Working Pairs for the Absorption Refrigeration Cycle

Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf2N] and R1234ze(E)/[HMIM][Tf2N] Working Pairs for the Absorption Refrigeration Cycle

Vapor–Liquid Equilibria and Diffusion Coefficients of Difluoromethane, 1,1,1,2-Tetrafluoroethane, and 2,3,3,3-Tetrafluoropropene in Low-Viscosity Ionic Liquids

Phase Equilibria of trans-1,3,3,3-Tetrafluoropropene with Three Imidazolium Ionic Liquids

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Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf₂N] and R1234ze(E)/[HMIM][Tf₂N] Working Pairs for the Absorption Refrigeration Cycle

Vapor–Liquid Equilibrium of R1234yf/[HMIM][Tf₂N] and R1234ze(E)/[HMIM][Tf₂N] Working Pairs for the Absorption Refrigeration Cycle