Activity Coefficients of [Cnmim]Br (n = 3 to 8) Ionic Liquids in Aqueous Fructose Solution at T = 298.15 K

Zhuo, Kelei; Ren, Hao; Wei, Yujing; Chen, Yujuan; Ma, Jingjing

doi:10.1021/je4005195

Cited by 11 publications

(6 citation statements)

References 62 publications

(100 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 6 shows that increments of the negative values of G E depend on the increase of 2-HEAB content As proposed by the structural and electrostatic model, 45 the values of G E of the system NaCl in the (2-HEAB + H 2 O) solvent mixture may be mainly controlled by electrostatic competitive interaction. 46 3.4. Molecular Dynamics.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H₂O at 298.15 K

2017

View full text Add to dashboard Cite

The main objective of this work is to continue with a series of electrochemistry studies of mixtures of ionic liquids and water as a solvent to provide accurate data for future particular applications [J. Chem. Eng. Data201762752]. The mean activity coefficients for NaCl in [2-hydroxyethylammonium butyrate (2-HEAB) + H2O] as a solvent mixture were determined by cell potential measurements: Na–ion selective electrode (ISE)|NaCl (m), 2-HEAB (w), H2O (1 – w)|Cl–ion selective electrode (ISE) at molalities from 0.10 to 3.20 mol·kg–1 at 298.15 K. Different weight fractions (w) of 2-HEAB with w = 0.01, 0.05, 0.1, 0.2, 0.3, and 0.4 were used. At higher concentrations of w = 0.40, NaCl is salting out by 2-HEAB in water. The Pitzer ion interaction parameters β0, β1, and C γ were used to find the values of osmotic coefficients, solvent activity, and the excess Gibbs free energy for the mixed electrolyte system. The results may be interpreted by the clathrate-like formation of 2-HEAB + water. A qualitative description of the relation between water and the 2-HEAB was done using the general AMBER force field (GAFF).

show abstract

Section: Methodsmentioning

confidence: 99%

“…As proposed by the structural and electrostatic model, the values of G E of the system NaCl in the (2-HEAB + H 2 O) solvent mixture may be mainly controlled by electrostatic competitive interaction …”

Section: Experimental Sectionmentioning

confidence: 99%

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H₂O at 298.15 K

2017

View full text Add to dashboard Cite

show abstract

“…Figures – illustrate the good performance of the ePC-SAFT for the binaries considered in our work. The calculated ARD values as well as the sources of used experimental data − for the densities, the mean ionic activity coefficients, and the activity of water are given in Table S15 (SI).…”

Section: Resultsmentioning

confidence: 99%

Partitioning of l-Tryptophan in Aqueous Biphasic Systems Containing an Alkylimidazolium Ionic Liquid and a Phosphate Salt

Korchak

Сафонова

Victorov

2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

For the development of novel liquid extraction systems, systematic experimental data and methods of predicting liquid−liquid equilibria are required. In this work, we report experimental data for a family of aqueous biphasic systems (ABSs) containing 1-butyl-3-methylimidazolium bromide/chloride, 1hexyl-3-methylimidazolium bromide/chloride, and 1-methyl-3octylimidazolium bromide/chloride in the presence of an inorganic salt (K 2 HPO 4 or K 3 PO 4 ) and assess the predictive capabilities of the ePC-SAFT equation of state in its classical form. The experimental binodal data for eight ABSs have been obtained in a broad concentration range. Although the ePC-SAFT gives a good description of the properties of binary systems, the deviations between experimental and predicted tie lines for the ternary ABSs are significant and the predictions are not quantitative. Improvement in the electrostatic term of the model is required for better performance. We systematically study the partitioning of L-tryptophan, taken as a model solute, and discuss the effect of the alkyl chain length of the imidazolium cation [C n mim] + and the specific effect of the anion of ionic liquids (ILs) (chloride versus bromide). We show that the alkyl chain length of [C n mim] + has almost no effect on the partition coefficients of L-tryptophan (K Trp ) in the ABSs with K 3 PO 4 , while lower K Trp values are found for ILs with the [C 4 mim] + cation for the ABSs with K 2 HPO 4 . A substantial specific effect of the anion of ILs is only observed when the salting-out effect of the inorganic salt is most pronounced, i.e., in the case of the ABSs with K 3 PO 4 . It should be specially mentioned that K Trp values are higher for the ABSs studied in this work in comparison with the available literature data for other IL−salt−water ABSs. This fact implies that the investigated ABSs have high potential for the extraction of biocomponents.

show abstract

“…They stated that the electrostatic interactions controlled the interactions between [Cnmim]Br and fructose. 27 Zhen et al determined the γ values (γ i ∞ ) values for 22 hydrocarbon components in ethyl (2-hydroxyethyl)dimethylammonium diethyl phosphate ILs using GLC at different temperatures. They have also calculated the selectivity of benzene in cyclohexane-and hexane-rich systems.…”

Section: ■ Introductionmentioning

confidence: 99%

“…determined the activity coefficient of 1-alkyl-3-methylimidazolium bromide [Cnmim]Br ( n = 3–8) ILs in fructose + water mixed solvents at 298.15 K by cell potential measurements. They stated that the electrostatic interactions controlled the interactions between [Cnmim]Br and fructose …”

Section: Introductionmentioning

confidence: 99%

Measuring Activity Coefficient at Infinite Dilution of Hydrocarbons in Ionic Liquids and Evaluation of Other Thermodynamic Properties using Gas Chromatography

et al. 2019

View full text Add to dashboard Cite

Activity coefficients at infinite dilution (γi ∞) offer a valuable tool for solvent selection in extraction processes. In this study, the γi ∞ values for solutes like alkanes, aromatics, and naphthenes in solvents, i.e., ionic liquids N-butyl-4-methylpyridinium tetrafluoroborate [BMPy][BF4], 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, [BMPyr][NTf2], and 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4], were estimated using gas–liquid chromatography at temperatures 313.1, 333.1, and 353.1 K. Partial molar excess enthalpies at infinite dilution (ΔH 1 E,∞) were evaluated from the γi ∞ values. The selectivity for the toluene/n-heptane system was also calculated from the experimentally observed γi ∞ and compared to the literature values for well-established industrial solvents sulfolane and N-methyl pyrrolidone.

show abstract

Activity Coefficients of [C_nmim]Br (n = 3 to 8) Ionic Liquids in Aqueous Fructose Solution at T = 298.15 K

Cited by 11 publications

References 62 publications

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H₂O at 298.15 K

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H₂O at 298.15 K

Partitioning of l-Tryptophan in Aqueous Biphasic Systems Containing an Alkylimidazolium Ionic Liquid and a Phosphate Salt

Measuring Activity Coefficient at Infinite Dilution of Hydrocarbons in Ionic Liquids and Evaluation of Other Thermodynamic Properties using Gas Chromatography

Contact Info

Product

Resources

About

Activity Coefficients of [Cnmim]Br (n = 3 to 8) Ionic Liquids in Aqueous Fructose Solution at T = 298.15 K

Cited by 11 publications

References 62 publications

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H2O at 298.15 K

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H2O at 298.15 K

Partitioning of l-Tryptophan in Aqueous Biphasic Systems Containing an Alkylimidazolium Ionic Liquid and a Phosphate Salt

Measuring Activity Coefficient at Infinite Dilution of Hydrocarbons in Ionic Liquids and Evaluation of Other Thermodynamic Properties using Gas Chromatography

Contact Info

Product

Resources

About

Activity Coefficients of [C_nmim]Br (n = 3 to 8) Ionic Liquids in Aqueous Fructose Solution at T = 298.15 K

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H₂O at 298.15 K

Mean Activity Coefficients of NaCl in the Mixture of 2-Hydroxyethylammonium Butyrate + H₂O at 298.15 K