ABSTRACT

In this work, the separation of benzene from aliphatic hydrocarbons (hexane, or heptane) is investigated by extraction with 1-ethyl-3-methylpyridinium ethylsulphate ionic liquid, [EMpy][ESO4]. (Liquid + liquid) equilibria (LLE) data are determined for the ternary systems: {hexane (1) + benzene (2) + [EMpy][ESO4] (3)} at T = (283.15, 293.15, 298.15, and 303.15) K and {heptane (1) + benzene (2) + [EMpy][ESO4] (3)} at T = (283.15 and 298.15) K and atmospheric pressure. The selectivity and distribution coefficient, derived from the tie line data, were used to determine whether the ionic liquid is a good solvent for the extraction of aromatic from aliphatic compounds. The consistency of the tie line data was ascertained by applying the Othmer Tobias and Hand equations. The experimental results for the ternary systems were well correlated with the NRTL equation. A study of the temperature effect and the influence of the chain length of the alkanes were realized. The results obtained were compared with other ionic liquids. There are no literature data for the mixtures discussed in this paper.

Compounds

#	Formula	Name
1	C6H6	benzene
2	C6H14	hexane
3	C7H16	heptane
4	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	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	1 2 4	Refractive index (Na D-line) ; Liquid	Mole fraction - 2; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	20
POMD	1 2 4	Speed of sound, m/s ; Liquid	Mole fraction - 2; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	20
POMD	1 2 4	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	20
POMD	1 2 4	Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mole fraction - 1; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	43
POMD	1 3 4	Refractive index (Na D-line) ; Liquid	Mole fraction - 3; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	16
POMD	1 3 4	Speed of sound, m/s ; Liquid	Mole fraction - 3; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	16
POMD	1 3 4	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	16
POMD	1 3 4	Mole fraction - 3 ; Liquid mixture 1 Mole fraction - 3 ; Liquid mixture 2 Mole fraction - 1 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mole fraction - 1; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	20

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

(Liquid + liquid) equilibria for ternary mixtures of (alkane + benzene + [EMpy] [ESO4]) at several temperatures and atmospheric pressure

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

ABSTRACT