ABSTRACT

In this paper the extraction of toluene from cyclic hydrocarbons (cyclohexane, or methylcyclohexane, or cyclooctane, or cyclohexene) was analyzed by liquid extraction with 1-butyl-3-methylimidazolium methylsulfate ionic liquid, [BMim][MSO4], as solvent. The experimental (liquid + liquid) equilibrium (LLE) data were determined at T = 298.15 K and atmospheric pressure. Solubility curves were obtained by the cloud point method and tie-line compositions were determined by density measurement. An analysis of the influence of different cyclic hydrocarbons on the extraction was performed. The effectiveness of the extraction of toluene from cyclic hydrocarbons was evaluated by means of the solute distribution ratio and selectivity values. The degree of consistency of the experimental LLE data was ascertained using the Othmer-Tobias and Hand equations. The experimental data for the (liquid + liquid) equilibria of the ternary systems were correlated with the Non-Random Two-Liquid (NRTL) and UNIversal QUAsi-Chemical (UNIQUAC) thermodynamic models.

Compounds

#	Formula	Name
1	C6H12	cyclohexane
2	C7H14	methylcyclohexane
3	C8H16	cyclooctane
4	C6H10	cyclohexene
5	C7H8	toluene
6	C9H18N2O4S	1-butyl-3-methylimidazolium methyl 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	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
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	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	6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	1 6	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	5 6	Mass density, kg/m3 ; Liquid		Mole fraction - 5; Liquid Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	2
POMD	2 6	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	3 6	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	4 6	Mass density, kg/m3 ; Liquid	Mole fraction - 4; Liquid Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	2 5 6	Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 5 ; Liquid mixture 1 Mole fraction - 2 ; Liquid mixture 1	Mole fraction - 5; Liquid mixture 2	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Titration method Titration method Titration method	10
POMD	2 5 6	Mass density, kg/m3 ; Liquid	Mole fraction - 2; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11
POMD	5 1 6	Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 5 ; Liquid mixture 2	Mole fraction - 5; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Titration method Titration method Titration method	9
POMD	5 1 6	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	10
POMD	5 3 6	Mole fraction - 5 ; Liquid mixture 1 Mole fraction - 3 ; Liquid mixture 2 Mole fraction - 5 ; 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	Titration method Titration method Titration method	10
POMD	5 3 6	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11
POMD	5 4 6	Mole fraction - 5 ; Liquid mixture 1 Mole fraction - 4 ; Liquid mixture 2 Mole fraction - 5 ; 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	Titration method Titration method Titration method	9
POMD	5 4 6	Mass density, kg/m3 ; Liquid	Mole fraction - 4; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Separation of toluene from cyclic hydrocarbons using 1-butyl-3-methylimidazolium methylsulfate ionic liquid at T = 298.15 K and atmospheric pressure

Dominguez, I.[Irene], Calvar, N.[Noelia], Gomez, E.[Elena], Dominguez, A.[Angeles]

ABSTRACT