ABSTRACT

The aim of this work is to determine if the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate is a good solvent for the separation of xylenes and hexane by liquid extraction. With this purpose, liquid-liquid equilibrium (LLE) data for the ternary systems {hexane + o-xylene, or m-xylene, or p-xylene + 1-ethyl-3-methylimidazolium ethylsulfate} were determined at T = 298.15 K and atmospheric pressure. Selectivity and solute distribution ratio, derived from the experimental equilibrium data, were calculated and used to determine if this ionic liquid can be used as a potential solvent for the extraction of xylenes from their mixtures with hexane. The experimental LLE data for the ternary systems were correlated using the NRTL and UNIQUAC models.

Compounds

#	Formula	Name
1	C6H14	hexane
2	C8H10	1,2-dimethylbenzene
3	C8H10	1,3-dimethylbenzene
4	C8H10	1,4-dimethylbenzene
5	C8H16N2O4S	1-ethyl-3-methylimidazolium ethyl sulfate

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	5	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	1 5	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	1 5	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	2 5	Mole fraction - 2 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	2 5	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	2 1	Mole fraction - 2 ; Liquid mixture 1		Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data	10
POMD	3 5	Mole fraction - 3 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	3 5	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	3 1	Mole fraction - 3 ; Liquid mixture 1		Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data	10
POMD	4 5	Mole fraction - 4 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	4 5	Mass density, kg/m3 ; Liquid	Mole fraction - 4; Liquid Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	4 1	Mole fraction - 1 ; Liquid mixture 1		Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data	8
POMD	2 1 5	Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 2	Mole fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	10
POMD	2 1 5	Mole fraction - 2 ; Liquid mixture 1	Mole fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	8
POMD	2 1 5	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	8
POMD	3 1 5	Mole fraction - 3 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 3 ; Liquid mixture 2	Mole fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	10
POMD	3 1 5	Mole fraction - 3 ; Liquid mixture 1	Mole fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	7
POMD	3 1 5	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid Mole fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	4 1 5	Mole fraction - 4 ; Liquid mixture 1	Mole fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	6
POMD	4 1 5	Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 4 ; Liquid mixture 2	Mole fraction - 4; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	8
POMD	4 1 5	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid Mole fraction - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	6

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Study of [EMim][ESO4] ionic liquid as solvent in the liquid-liquid extraction of xylenes from their mixtures with hexane

Gonzalez, E. J.[Emilio J.], Gonzalez, B.[Begona], Calvar, N.[Noelia], Dominguez, A.[Angeles]

ABSTRACT