ABSTRACT

In this paper, the separation of toluene from aliphatic hydrocarbons (heptane, or octane, or nonane) was analyzed by solvent extraction with 1-ethyl-3-methylpyridinium ethylsulfate ionic liquid, [EMpy][ESO4]. Liquid liquid equilibrium (LLE) data for the ternary systems {heptane (1) + toluene (2) + [EMpy][ESO4] (3)}, {octane (1) + toluene (2) + [EMpy][ESO4] (3)}, and {nonane (1) + toluene (2) + [EMpy][ESO4] (3)} were obtained by measurements at T = 298.15 K and atmospheric pressure. The selectivity, % removal of aromatic, and solute distribution ratio, obtained from experimental equilibrium results, were used to determine the ability of [EMpy][ESO4] as a solvent. The degree of consistency of the experimental LLE values was ascertained using the Othmer Tobias and Hand equations. The experimental results for the ternary systems were correlated with the NRTL model. Finally, the results obtained were compared with other ionic liquids and other solvents.

Compounds

#	Formula	Name
1	C7H16	heptane
2	C8H18	octane
3	C9H20	nonane
4	C7H8	toluene
5	C10H17NO4S	1-ethyl-3-methylpyridinium ethylsulfate

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	Automatic Refractometer	1
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	4 1	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	11
POMD	4 2	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	11
POMD	4 3	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	11
POMD	4 1 5	Mole fraction - 4 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 4 ; 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	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	3
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	7
POMD	4 2 5	Mole fraction - 4 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 4 ; Liquid mixture 2	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 Density calibration data Density calibration data	8
POMD	4 2 5	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid Mole fraction - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	6
POMD	4 2 5	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid Mole fraction - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	3
POMD	4 3 5	Mole fraction - 4 ; Liquid mixture 1 Mole fraction - 3 ; Liquid mixture 2 Mole fraction - 4 ; Liquid mixture 2	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 Density calibration data Density calibration data	8
POMD	4 3 5	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Mole fraction - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	8
POMD	4 3 5	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Mole fraction - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	3

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Separation of toluene from alkanes using 1-ethyl-3-methylpyridinium ethylsulfate ionic liquid at T = 298.15 K and atmospheric pressure

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

ABSTRACT