ABSTRACT

Isobaric vapor-liquid equilibria (VLE) for the ethanol + water + [emim][triflate] ternary system have been obtained at 100 kPa using a recirculating still. The ethanol + water binary system was also obtained. Furthermore, data were simulated with the Mock s electrolyte nonrandom two-liquid (NRTL) model, using the solvent-solvent interaction parameters obtained from VLE data of the ethanol + water system and taking the solvent-ionic liquid (IL) interaction parameters for the other binary systems from previous works. The agreement between experimental and calculated data is very good, showing the predictive capacity of the model. The addition of [emim][triflate] produces the disappearance of the ethanol + water azeotrope when the mole fraction of ionic liquid in the liquid phase is greater than 0.023 at 100 kPa. The effect of [emim][triflate] on the ethanol + water system has been compared with that produced by other ionic liquids reported in the literature.

Compounds

#	Formula	Name
1	C2H6O	ethanol
2	H2O	water
3	C7H11F3N2O3S	1-ethyl-3-methylimidazolium trifluoromethanesulfonate

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	76
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	103
POMD	1 2	Boiling temperature at pressure P, K ; Gas	Mole fraction - 1; Liquid	Pressure, kPa; Gas	Gas Liquid	Ebulliometric method (Recirculating still)	15
POMD	1 2	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid	Pressure, kPa; Gas	Gas Liquid	Chromatography	15
POMD	1 2 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid Solvent: Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	EBULLIO:UFactor:4	54
POMD	1 2 3	Mole fraction - 1 ; Gas	Mole fraction - 3; Liquid Solvent: Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Gas Liquid	Chromatography	54

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Using 1-Ethyl-3-methylimidazolium Trifluoromethanesulfonate as an Entrainer for the Extractive Distillation of Ethanol + Water Mixtures

Orchilles, A. V., Miguel, P. J.[Pablo J.], Vercher, E.[Ernesto], Martinez-Andreu, A.[Antoni]

ABSTRACT