Activity coefficients at infinite dilution of organic solutes in the ionic liquid 1-ethyl-3-methylimidazolium methanesulfonate

Activity Coefficients at Infinite Dilution of Organic Compounds in Four New Imidazolium-Based Ionic Liquids

“…À from this work are compared with recent data published by Blahut et al 39 Reasonably good agreement is observed with a standard deviation of about 6 % for polar compounds, although the deviation is closer to 30 % for n-alkanes.…”

Measurements of activity coefficients at infinite dilution for organic solutes and water in the ionic liquid 1-ethyl-3-methylimidazolium methanesulfonate

“…As was mentioned in the introduction, the application of ILs is proposed in many separation processes. The selectivity, S 1 12 and the capacity k 1 2 of possible separation process is defined as follows [20]: [7] shows that the selectivity of the separation of hexane/toluene and other aliphatics/aromatics are almost half lower in our data. For cyclohexane/benzene, this difference is lower, but in the same direction.…”

“…The selectivities coming from the ternary LLE were very promising. Similar information about the high selectivity of separation of tetra-butyl-methyl ether and ethanol at T = 318.15 K can be calculated from the activity coefficients at infinite dilution values, S = 67.4 [7]. The possible extraction of aromatic hydrocarbons from aliphatic hydrocarbons and especially of thiophene from heptane was shown with high selectivities [7].…”

“…Similar information about the high selectivity of separation of tetra-butyl-methyl ether and ethanol at T = 318.15 K can be calculated from the activity coefficients at infinite dilution values, S = 67.4 [7]. The possible extraction of aromatic hydrocarbons from aliphatic hydrocarbons and especially of thiophene from heptane was shown with high selectivities [7]. The [EMIM][MeSO 3 ] was used as green solvent for the simultaneous separation of thiophene and pyridine from iso-octane in quaternary LLE measurements with average selectivities [8].…”

“…The main focus of these measurements is put on polar solutes, water, nitrogen and sulphur composed compounds. Some aliphatic and aromatic hydrocarbons were measured for the control and the comparison with previously published values [7]. We will discuss the separation of many different mixtures including aromatic/aliphatic hydrocarbons, xylenes/aliphatic hydrocarbons or desulphurization and denitrogenation of fuels.…”