Separation of binary mixtures based on gamma infinity data using [OMMIM][BF4] ionic liquid and modelling of thermodynamic functions

He, Zhuang-Zhuang; Miao-Zhang,; Ge, Ming-Lan; Jiao, Yu-Hai; Zhao-Mu,; Yi, Yufeng; Ding, Fang

doi:10.1016/j.jct.2018.09.003

Cited by 13 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…B ii and B i 2 can be inferred from the basic parameters P c ij , T c ij , v c ij , Z c ij , and eccentricity factor ω ij in the literature equations. The eccentricity factors ω of the solutes and carrier gas, the saturated vapor pressure of solutes ( i ) in the temperature range of 313 to 353 K, and the critical parameters ( T c , P c , Z c , V c ) were obtained from the calculation data of Ge and co-workers. − …”

Section: Theorymentioning

confidence: 99%

Infinite Dilution Activity Coefficients and Gas–Liquid Partition Coefficients of Organic Compounds in Ionic Liquid 1-Butyl-2,3-dimethylimidazolium Thiocyanate: Measurements and LFER Calculations

Wang

et al. 2023

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

Infinite dilution activity coefficients (γ i ∞) of 31 organic solutes (alkanes, cycloalkanes, olefins, aromatics, chlorinated alkanes, alcohols, and other polar organic solutes) in the ionic liquid (IL) 1-butyl-2,3-dimethylimidazole thiocyanate ([BMMIM][SCN]) were determined by gas–liquid chromatographic (GLC) method in the temperature range of 313.15–353.15 K. The infinite dilution partial molar excess enthalpies (H̅ i E, ∞), entropies (T ref S̅ i E, ∞), and Gibbs free energies (G̅ i E, ∞) of the organic solutes at the reference temperature T = 298.15 K and the solubility parameters (δ3) of [BMMIM][SCN] were derived from γ i ∞. The gas–liquid partition coefficients (K L) of solutes at different temperatures were calculated by referring to the densities of [BMMIM][SCN]. The linear free energy relationship solvation model was used to fit the K L values, and the K L prediction model was obtained. The selectivity (S ij ∞) and capacity (k j ∞) of n-hexane (i)/benzene (j) and cyclohexane (i)/benzene (j) at infinite dilution at 323.15 K were calculated. The results were compared with the values of ILs with the thiocyanate anion in the literature.

show abstract

Section: Theorymentioning

confidence: 99%

Infinite Dilution Activity Coefficients and Gas–Liquid Partition Coefficients of Organic Compounds in Ionic Liquid 1-Butyl-2,3-dimethylimidazolium Thiocyanate: Measurements and LFER Calculations

Wang

et al. 2023

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

show abstract

“…For the IL-based BTX absorption process, existing studies mainly focus on the measurement of the solubility parameters of BTX in BTX–IL mixture systems, and a few studies on the absorption process evaluation have been reported recently. For example, Ge and co-authors have determined the activity coefficients at infinite dilution for BTX in a series of ILs such as [OMMIM][BF 4 ], [PMIM][Br], [HMMIM][BF 4 ], [HMMIM][NTf 2 ], [MMIM][DMP], and [EMIM][DMP] by the gas–liquid chromatographic method, which can provide the basic thermodynamic data for the IL-based BTX absorption process. Castillo et al have measured the partition coefficients of toluene and dichloromethane in 23 hydrophobic ILs using a thermogravimetric microbalance.…”

Section: Introductionmentioning

confidence: 99%

Deciphering the Sustainability of an Ionic Liquid-Based BTX Harvesting Process from Energetic, Environmental, and Economic Perspectives

Ning

et al. 2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

1-Ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([EMIM][Tf2N]) ionic liquid as a novel absorbent has excellent performance in BTX absorption. However, compared with the traditional method using triethylene glycol (TEG), the sustainability of the former is unknown. Thus, to bridge the gap and give a comprehensive evaluation of its industrialization potential, a methodology-integrated energetic, economic, and environmental assessment was employed. The assessment results show that the heating and cooling energy consumptions of the TEG process are 1.08 and 0.74 times higher than those of the [EMIM][Tf2N] process, respectively. But through heat integration, 5% hot and 3.4% cold utilities can be saved for the [EMIM][Tf2N] process. In terms of economic performance, the total annual costs for TEG and [EMIM][Tf2N] processes are 0.6111 and 0.4841 M$/year, respectively, and the latter is 26.3% lower than the former. As for the environmental assessment, the results indicated that compared with the TEG scenario, the [EMIM][Tf2N] scenario without absorbent recovery presented higher environmental burdens in all categories, and the largest difference lies in acidification, for which the latter is 42 times that of the former. However, when considering the absorbent recovery, the results are contradictory. Thus, the comprehensive assessment methodology proved that the [EMIM][Tf2N]-based BTX absorption process is sustainable and can be a potential industrialization technology.

show abstract

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

et al. 2023

View full text Add to dashboard Cite

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.

show abstract

Separation of binary mixtures based on gamma infinity data using [OMMIM][BF4] ionic liquid and modelling of thermodynamic functions

Cited by 13 publications

References 35 publications

Infinite Dilution Activity Coefficients and Gas–Liquid Partition Coefficients of Organic Compounds in Ionic Liquid 1-Butyl-2,3-dimethylimidazolium Thiocyanate: Measurements and LFER Calculations

Infinite Dilution Activity Coefficients and Gas–Liquid Partition Coefficients of Organic Compounds in Ionic Liquid 1-Butyl-2,3-dimethylimidazolium Thiocyanate: Measurements and LFER Calculations

Deciphering the Sustainability of an Ionic Liquid-Based BTX Harvesting Process from Energetic, Environmental, and Economic Perspectives

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

Contact Info

Product

Resources

About