Measurements of activity coefficients at infinite dilution of organic solutes in the ionic liquid 1-ethyl-3-methylimidazolium ethylphosphonate [EMIM][(EtO)(H)PO2] using gas-liquid chromatography

Allal, Farida; Mutelet, Fabrice; Dahmani, Abdallah; Saidat, Boubakeur

doi:10.1016/j.molliq.2016.04.061

Cited by 22 publications

(8 citation statements)

References 43 publications

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“…The γ 12 ∞ values of examined n -alkanes, alcohols, and aromatics increase with the increasing number of carbon atom. A similar behavior was also observed for other reported alkyl (ethyl, butyl, and hexyl) imidazolium cation-based ILs. ,, Compared to other solutes, the alcohols have better solubility in the ILs, which depend strongly on the polarity and hydrogen bond …”

Section: Resultssupporting

confidence: 84%

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Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([C_nMIM][HSO₄], n = 4, 6, and 8)

Wang

2020

J. Chem. Eng. Data

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Thermodynamic parameters at infinite dilution for thirty-one organic solutes in a series of imidazolyl hydrogen sulfate ionic liquids (ILs) were determined by inverse gas chromatography (IGC). The IGC characterization was carried out at temperatures ranging between 303.15 and 343.15 K for determining the Hildebrand solubility parameter (δ 2 ) as well as the Flory−Huggins interaction parameter (χ 12 ∞ ), the activity coefficient at infinite dilution (γ 12 ∞ ), and the thermodynamic functions. In addition, based on the γ 12 ∞ results, the selectivity and capacity were directly calculated for two separation problems (hexane/benzene and hexane/thiophene). Under the different effects of the three ILs, it was found that the values of χ 12 ∞ and γ 12 ∞ were significantly different for the solutes tested, but all the values follow a certain pattern: they increase with temperature or decrease with temperature. As the temperature increased, the solubility parameters of the three ILs showed a linear decrease trend. The solubility parameters of the three ionic liquids at room temperature were obtained by extrapolation as δ 2([BMIM][HSO4]) = 24.15 MPa 1/2 , δ 2([HMIM][HSO4]) = 24.10 MPa 1/2 , and δ 2([OMIM][HSO4]) = 23.66 MPa 1/2 .

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Section: Resultssupporting

confidence: 84%

“…27,37,38 Compared to other solutes, the alcohols have better solubility in the ILs, which depend strongly on the polarity and hydrogen bond. 39 The solvating ability of the IL for separating binary mixtures can be evaluated by the selectivity (S 12…”

Section: Resultsmentioning

confidence: 99%

Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([C_nMIM][HSO₄], n = 4, 6, and 8)

Wang

2020

J. Chem. Eng. Data

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“…Ionic liquids (ILs), as demonstrated by green and neoteric solvent research in recent years [1,2], are salts that are commonly made up of asymmetric organic cations, and either inorganic or organic anions [3]. ILs have been widely used as novel electrolytes, separation solvents, and reaction media [4,5], due to their excellent thermal stability, adjustable density, low melting point, strong solvation and high electrochemical stability [6,7].…”

Section: Introductionmentioning

confidence: 99%

Practical Determination of the Solubility Parameters of 1-Alkyl-3-methylimidazolium Bromide ([CnC1im]Br, n = 5, 6, 7, 8) Ionic Liquids by Inverse Gas Chromatography and the Hansen Solubility Parameter

Zhu

Wang

et al. 2019

Molecules

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The physicochemical properties of four 1-alkyl-3-methylimidazolium bromide ([CnC1im]Br, n = 5, 6, 7, 8) ionic liquids (ILs) were investigated in this work by using inverse gas chromatography (IGC) from 303.15 K to 343.15 K. Twenty-eight organic solvents were used to obtain the physicochemical properties between each IL and solvent via the IGC method, including the specific retention volume and the Flory–Huggins interaction parameter. The Hildebrand solubility parameters of the four [CnC1im]Br ILs were determined by linear extrapolation to be δ 2 ( [ C 5 C 1 im ] Br ) = 25.78 (J·cm−3)0.5, δ 2 ( [ C 6 C 1 im ] Br ) = 25.38 (J·cm−3)0.5, δ 2 ( [ C 7 C 1 im ] Br ) =24.78 (J·cm−3)0.5 and δ 2 ( [ C 8 C 1 im ] Br ) = 24.23 (J·cm−3)0.5 at room temperature (298.15 K). At the same time, the Hansen solubility parameters of the four [CnC1im]Br ILs were simulated by using the Hansen Solubility Parameter in Practice (HSPiP) at room temperature (298.15 K). The results were as follows: δ t ( [ C 5 C 1 im ] Br ) = 25.86 (J·cm−3)0.5, δ t ( [ C 6 C 1 im ] Br ) = 25.39 (J·cm−3)0.5, δ t ( [ C 7 C 1 im ] Br ) = 24.81 (J·cm−3)0.5 and δ t ( [ C 8 C 1 im ] Br ) = 24.33 (J·cm−3)0.5. These values were slightly higher than those obtained by the IGC method, but they only exhibited small errors, covering a range of 0.01 to 0.1 (J·cm−3)0.5. In addition, the miscibility between the IL and the probe was evaluated by IGC, and it exhibited a basic agreement with the HSPiP. This study confirms that the combination of the two methods can accurately calculate solubility parameters and select solvents.

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“…In our previous work [40], the activity coefficients at infinite dilution 12 ∞ for the selected organic solutes of 1ethyl-3-methylimidazolium ethylphosphonate [EMIM][(EtO)(H)PO2], with temperature values ranged from 323.15 to 363.15K. were measured using gas-liquid chromatography.…”

Section: Introductionmentioning

confidence: 99%

Volumetric properties of binary mixtures of 1-ethyl-3-methylimidazolium ethyl phosphonate + methanol or 2-propanol

Allal

Dahmani²,

Saidat³

2019

International Journal of Thermodynamics

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The present study aimed to determine the refractive indices at 293.15 K and density data at T= (283.15, 293.15, 303.15 and 313.15) K of the binary mixtures of 1-ethyl-3-methylimidazolium ethylphosphonate + methanol or 2-propanol under the atmospheric pressure. The excess molar volume, the apparent molar volume, the partial molar and excess partial molar volumes of the components at infinite dilution were calculated from the experimental values. The results of excess molar volumes were fitted to a Redlich-Kister equation, leading thus to obtain the coefficients and to estimate the standard deviations between the experimental and the calculated quantities. The results of excess molar volumes of the two investigated binary mixtures showed negative deviations from ideal behavior of the investigated binary systems which can be then discussed in terms of ion-dipole interactions, formation of hydrogen bonds and structural factors. Additionally, the refractive indices measurements and the deviations of refractive index were determined.

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Measurements of activity coefficients at infinite dilution of organic solutes in the ionic liquid 1-ethyl-3-methylimidazolium ethylphosphonate [EMIM][(EtO)(H)PO2] using gas-liquid chromatography

Cited by 22 publications

References 43 publications

Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([C_nMIM][HSO₄], n = 4, 6, and 8)

Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([C_nMIM][HSO₄], n = 4, 6, and 8)

Practical Determination of the Solubility Parameters of 1-Alkyl-3-methylimidazolium Bromide ([CnC1im]Br, n = 5, 6, 7, 8) Ionic Liquids by Inverse Gas Chromatography and the Hansen Solubility Parameter

Volumetric properties of binary mixtures of 1-ethyl-3-methylimidazolium ethyl phosphonate + methanol or 2-propanol

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Measurements of activity coefficients at infinite dilution of organic solutes in the ionic liquid 1-ethyl-3-methylimidazolium ethylphosphonate [EMIM][(EtO)(H)PO2] using gas-liquid chromatography

Cited by 22 publications

References 43 publications

Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([CnMIM][HSO4], n = 4, 6, and 8)

Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([CnMIM][HSO4], n = 4, 6, and 8)

Practical Determination of the Solubility Parameters of 1-Alkyl-3-methylimidazolium Bromide ([CnC1im]Br, n = 5, 6, 7, 8) Ionic Liquids by Inverse Gas Chromatography and the Hansen Solubility Parameter

Volumetric properties of binary mixtures of 1-ethyl-3-methylimidazolium ethyl phosphonate + methanol or 2-propanol

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Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([C_nMIM][HSO₄], n = 4, 6, and 8)

Inverse Gas Chromatography: Effects of the Experimental Temperature and Molecular Structure on the Solubility Parameters of 1-Alkyl-3-methylimidazolium Hydrogen Sulfate ([C_nMIM][HSO₄], n = 4, 6, and 8)