Activity coefficients at infinite dilution for organic solutes and water in 1-ethyl-1-methylpyrrolidinium lactate

Domańska, Urszula; Karpińska, Monika; Zawadzki, Maciej

doi:10.1016/j.jct.2015.05.014

Cited by 30 publications

(8 citation statements)

References 38 publications

(36 reference statements)

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“…The water content and volatile compounds in the ILs were reduced by vacuum evaporation before the experiment. The vacuum evaporation pressure was 0.8 KPa, and the temperature was 363 K. The water content after vacuum evaporation was determined by using the Karl–Fisher titration technique [45], and the mass fraction of the water was less than 600 ppm. The required solvents for the experiment were purchased from J & K Scientific Ltd. (JULABO TitroLine 7750, Germany).…”

Section: Methodsmentioning

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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Section: Methodsmentioning

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 methodology of the present investigation is closely parallel to that used in our previous studies. ,,, The PerkinElmer Clarus 500 gas chromatograph equipped with a thermal conductivity detector (TCD) was used. The data were collected and processed using Total Chrom Workstation software.…”

Section: Methodsmentioning

confidence: 99%

“…The imidazolium-based ILs were investigated for the hexane/hex-1-ene separation and the propane/prop-1-ene separation. , ILs have been used with success in the separation of sulfur and nitrogen compounds from fuels with large selectivity. , In this work we continue our investigations on the measurements of γ 13 ∞ and an analysis of the obtained selectivities and capacities for olefins and parafins calculated from the γ 13 ∞ values. Very recently, the γ 13 ∞ data measured in our laboratory in the 1-butyl-4-cyanopyridinium bis{(trifluoromethyl)sulfonyl}imide ([BCN 4 Py][NTf 2 ]) and in the 1-ethyl-1-methylpyrrolidinium lactate ([EMPYR][Lac]) have shown high selectivity and capacity for the alkane/alkene separation. , The recently obtained values of selectivity and capacity for the alkane/alkene separation may be compared to other values, calculated for different ILs from the review of γ 13 ∞ data . Analysis of the literature data underline the high selectivity of the hexane/hex-1-ene separation obtained with the ILs containing the cyano-groups substituted in the cation or anion.…”

Section: Introductionmentioning

confidence: 99%

Separation Based on Limiting Activity Coefficients of Various Solutes in 1-Allyl-3-methylimidazolium Dicyanamide Ionic Liquid

Wlazło

Gawkowska

Domańska

2016

Ind. Eng. Chem. Res.

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In the present work the limiting activity coefficients (γ13 ∞) for 65 solutes, including polar and nonpolar solutes as alkanes, alkenes, and alkynes as well as aromatic hydrocarbons, alcohols, water, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, thiophene, and esters in the 1-allyl-3-methylimidazolium dicyanamide ([AMIM][DCA]) were determined by gas–liquid chromatography at six temperatures in the range of (308.15 to 358.15) K. The gas–liquid partition coefficients, K L at infinite dilution, and the fundamental thermodynamic functions, the limiting partial molar excess Gibbs energy, enthalpy, and entropy, were calculated. The values of selectivity and capacity for three separation problems as hexane/hex-1-ene, cyclohexane/cyclohexene, and ethylbenzene/styrene were calculated from γ13 ∞ and compared to literature values for imidazolium-based or dicyanamide-based ionic liquids (ILs) for the same separation problems. The data presented here shows that [AMIM][DCA] reveals one of the highest selectivities ever measured for the hexane/hex-1-ene separation.

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“…Much data are published in a field of separation applications using ILs; one of the most relevant is separation of aromatic/aliphatic hydrocarbons, sulfur compounds/alkanes, alkenes/alkanes, water/PEA or water/butan-1-ol or terpenes from natural sources. The best information about the selectivity of the IL used for separation can be obtained from the measurements of the γ ∞ by the gas-liquid chromatography technique [27,[98][99][100][101][102][103][104][105][106][107][108][109][110][111][112][113][114][115].…”

Section: Separation Application Using Limiting Activity Coefficientsmentioning

confidence: 99%

“…Recently, we presented the γ ∞ of diverse organic solutes for new, synthesized in our laboratory ILs [100][101][102][103][104][105][106][107][108][109][110][111][112][113][114][115]. The separation of hexane/hex-1-ene, or cyclohexane/cyclohexene, or ethylbenzene/styrene was discussed with ILs presented in Table 1 [100][101][102][103][104][105][106][107][108], as well as separation of water/butan-1-ol with ILs listed also in Table 1 [27,[109][110][111][112][113][114][115]. H of binary systems are described by the PC-SAFT [65,66], but for polar compounds the experimental data are necessary to use for the description of binary interaction parameters.…”

Section: Separation Application Using Limiting Activity Coefficientsmentioning

confidence: 99%

Experimental Data of Fluid Phase Equilibria- Correlation and Prediction Models: A Review

Domańska

2019

Processes

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The examples of phase equilibria in binary systems, solid/liquid (SLE), liquid/liquid (LLE), vapor/liquid (VLE), as well as liquid/liquid equilibria in ternary systems mainly containing ionic liquids (ILs), or the infragrance materials, or pharmaceuticals with molecular organic solvents, such as an alcohol, or water, or hydrocarbons, are presented. The most popular correlation methods of the experimental phase equilibrium data are presented, related to the excess Gibbs free energy models such as Wilson, universal-quasichemical, UNIQUAC and non-random two-liquid model, NRTL as well as several popular theories for the modeling of the phase equilibria and excess molar enthalpy, HE in binary or ternary mixtures are presented: the group contribution method (Mod. UNIFAC) and modified UNIFAC model for pharmaceuticals and lattice theory based on non-random hydrogen bonding (NRHB). The SLE, LLE, or VLE and HE of these systems may be described by the Perturbed-Chain Polar Statistical Associating Fluid Theory (PC-SAFT), or a Conductor-like Screening Model for Real Solvents (COSMO-RS). The examples of the application of ILs as extractants for the separation of aromatic hydrocarbons from alkanes, sulfur compounds from alkanes, alkenes from alkanes, ethylbenzene from styrene, butan-1-ol from water phase, or 2-phenylethanol (PEA) from water are discussed on the basis of previously published data. The first information about the selectivity of extrahent for separation can be obtained from the measurements of the limiting activity coefficient measurements by the gas–liquid chromatography technique. This review outlines the main research work carried out over the last few years on direct measurements of phase equilibria, or HE and limiting activity coefficients, the possibility of thermodynamic modeling with emphasis on recent research achievements and potential for future research.

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Activity coefficients at infinite dilution for organic solutes and water in 1-ethyl-1-methylpyrrolidinium lactate

Cited by 30 publications

References 38 publications

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

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

Separation Based on Limiting Activity Coefficients of Various Solutes in 1-Allyl-3-methylimidazolium Dicyanamide Ionic Liquid

Experimental Data of Fluid Phase Equilibria- Correlation and Prediction Models: A Review

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