Thermodynamics and activity coefficients at infinite dilution for organic compounds in the ionic liquid 1-hexyl-3-methylimidazolium chloride

Zhang, Miao; He, Zhuang-Zhuang; Kang, Rong-Xue; Ge, Ming-Lan

doi:10.1016/j.jct.2018.08.028

Cited by 20 publications

(10 citation statements)

References 31 publications

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“…Therefore, the potentialities of the studied IL were assessed for the separation of three industrial relevant azeotropic mixtures containing alkanols: ethanol/water, 2-propanol/water, and acetone/methanol. The S ij ∞ and k j ∞ values obtained in this work are presented in Figure and listed in Table S10 of the Supporting Information, along with the data found in the literature for other chloride-based ILs. ,, …”

Section: Resultsmentioning

confidence: 80%

“…The separation parameters for those mixtures with the investigated chloride-based IL are presented in Figure and listed in Table S8, along with data available for other chloride-based ILs ,, and organic solvents commonly used in industry. − The k j ∞ and Q ij ∞ values for the cyclohexane/benzene with NMP and NFM included in Figure are the average of the literature data. , …”

Section: Resultsmentioning

confidence: 99%

“…Comparison between the solvent performance index (dark colored bars) and capacities (light gray colored bars) at infinite dilution for the separation of octane/benzene (blue) and cyclohexane/benzene (green) at 333.15 K in [C 4 mim]Cl, [C 6 mim]Cl, [C 8 mim]Cl (this work), equimolar [C 4 mim]Cl/[C 12 mim]Cl mixture (this work), [C 12 mim]Cl (this work), [P 6,6,6,14 ]Cl, sulfolane, NFM, , and NMP. , The open circles represent the number of carbons n in [C n mim] + .…”

Section: Resultsmentioning

confidence: 99%

“…The S ij ∞ and k j ∞ values obtained in this work are presented in Figure 3 and listed in Table S10 of the Supporting Information, along with the data found in the literature for other chloride-based ILs. 24,26,43 As shown in Figure 3, excellent solvent performance indices (Q ij ∞ ≥ 77.35) and capacities (k j ∞ ≥ 7.37) are registered for the addressed azeotropic mixtures using the chloride-based ILs. These notable values might be attributed to the strong hydrogen bonding acceptor character of the chloride anion, 56,57 4, the selectivities and capacities (at 333.15 K) obtained with COSMO-RS for the separation problems discussed above in imidazolium chloride ionic liquids are compared with the available experimental data.…”

Section: Activitymentioning

confidence: 90%

“…44−47 The k j ∞ and Q ij ∞ values for the cyclohexane/ benzene with NMP and NFM included in Figure 1 are the average of the literature data. 46,47 For the imidazolium chloride-based ILs and the octane/ benzene mixture, k j ∞ slightly increases as n increases, while the opposite trend is observed for Q ij ∞ (except for [C 6 mim]Cl 43 ). Therefore, the use of imidazolium chloride ionic liquids with shorter alkyl chain lengths as separation agents is recommended, with [C 4 mim]Cl delivering a solvent performance index of at least 1.6 higher than the traditional organic solvents sulfolane (Q ij ∞ = 14.98), 45 NMP (Q ij ∞ = 11.38), 47 and NMF (Q ij ∞ = 10.74).…”

Section: Activitymentioning

confidence: 97%

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Imidazolium Chloride Ionic Liquid Mixtures as Separating Agents: Fuel Processing and Azeotrope Breaking

et al. 2022

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Relevant chemical separations for the petrochemical and chemical industries include the removal of aromatic hydrocarbons from aliphatics, the desulfurization and denitrification of fuels, and the separation of azeotropic mixtures containing alkanols. In an attempt to contribute to the development of novel technologies, the potentialities of imidazolium chloride ionic liquid (IL) mixtures as separation agents were investigated. Selectivities, capacities, and solvent performance indices were calculated through the activity coefficients at infinite dilution of organic solutes and water in the imidazolium chloride IL: [C8mim]Cl, [C12mim]Cl, and the equimolar mixture of [C4mim]Cl and [C12mim]Cl. Results show that the imidazolium chloride IL might be appropriately tailored for specific purposes, in which an increase in the proportion of cations containing larger alkyl chains tends to increase the overall affinity with organic solutes. The IL designer solvent concept was explored by comparing the IL equimolar mixture results with the intermediary [C8mim]Cl. The COSMO-RS thermodynamic model was also applied, showing it to be a promising tool for a fast qualitative screening of potential separation agents for specific separation processes.

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Activitymentioning

confidence: 90%

Section: Activitymentioning

confidence: 97%

See 3 more Smart Citations

Imidazolium Chloride Ionic Liquid Mixtures as Separating Agents: Fuel Processing and Azeotrope Breaking

et al. 2022

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Thermodynamic Properties, Activity Coefficients at Infinite Dilution and Cosmo‐SAC Modelling of Deep Eutectic Solvents at Different Temperatures

et al. 2023

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A deep understanding of the solute‐ deep eutectic solvent (DESs) interactions is required for an appropriate selection of DESs as absorption media in the extraction of binary mixtures. As a result, these studies are done to evaluate the values of the activity coefficients at infinite dilution ( ), allowing us to define and understand the nature of these intermolecular interactions comprising DES mixtures with volatile organic solvents at different temperatures using gas liquid chromatography technique to determine the for 34 solutes in DESs [zinc chloride+acetic or phosphoric acid] prepared at 1 : 2 molar ratio for the temperature range (313.15–353.15) K. The thermal stability of the prepared DESs was determined by a thermogravimetric analyser. Excess thermodynamic parameters [partial molar excess enthalpies and Gibbs free energies ] were derived from the data. The selectivity and capacity values for the industrial separations were calculated and compared with the literature values of other DESs, ionic liquids, and sulfolane to assess the suitability of the investigated DESs for possible applications as extracting solvents. The selectivity and capacity values are high and therefore, [zinc chloride+acetic or phosphoric acid] can be used as a potential solvent to replace the currently used conventional solvents in the separation of the selected azeotropes. COSMO‐SAC predictions were qualitatively in very good agreement with the experimental data.

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Glucose conversion into hydroxymethylfurfural via ionic liquid-based processes

Zunita

Yuan

Laksono

2022

Chemical Engineering Journal Advances

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Thermodynamics and activity coefficients at infinite dilution for organic compounds in the ionic liquid 1-hexyl-3-methylimidazolium chloride

Cited by 20 publications

References 31 publications

Imidazolium Chloride Ionic Liquid Mixtures as Separating Agents: Fuel Processing and Azeotrope Breaking

Imidazolium Chloride Ionic Liquid Mixtures as Separating Agents: Fuel Processing and Azeotrope Breaking

Thermodynamic Properties, Activity Coefficients at Infinite Dilution and Cosmo‐SAC Modelling of Deep Eutectic Solvents at Different Temperatures

Glucose conversion into hydroxymethylfurfural via ionic liquid-based processes

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