Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Application of [EMim][ESO4] ionic liquid as solvent in the extraction of toluene from cycloalkanes: Study of liquid-liquid equilibria at T = 298.15 K

Gonzalez, E. J.[Emilio J.], Calvar, N.[Noelia], Gomez, E.[Elena], Dominguez, A.[Angeles]
Fluid Phase Equilib. 2011, 303, 2, 174-179
ABSTRACT
In this paper, the separation of toluene from cycloalkanes by liquid extraction using the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate, [EMim][ESO4], as solvent was studied. Liquid-liquid equilibrium (LLE) data for ternary systems {cyclohexane, or cyclooctane, or methylcyclohexane + toluene + [EMim][ESO4]} were determined at T = 298.15 K and atmospheric pressure. Selectivity and solute distribution ratio, derived from the tie-lines, were used to determine the ability of this ionic liquid as solvent for the separation of toluene from its mixtures with cycloalkanes. The degree of consistency of the tie-lines was tested using the Othmer-Tobias equation, and the experimental LLE data were correlated using the non-random two-liquid (NRTL) and the UNIversal QUAsi-Chemical (UNIQUAC) models.
Compounds
# Formula Name
1 C7H8 toluene
2 C6H12 cyclohexane
3 C7H14 methylcyclohexane
4 C8H16 cyclooctane
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
  • 2
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Visual Observation
  • 9
  • POMD
  • 1
  • 2
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 3
  • POMD
  • 1
  • 2
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 1 ; 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
  • 10
  • POMD
  • 1
  • 2
  • 5
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 2; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 9
  • POMD
  • 1
  • 2
  • 5
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 2; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 3
  • POMD
  • 1
  • 4
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 4; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Visual Observation
  • 10
  • POMD
  • 1
  • 4
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 4; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 3
  • POMD
  • 1
  • 4
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 1 ; 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
  • 9
  • POMD
  • 1
  • 4
  • 5
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 4; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 10
  • POMD
  • 1
  • 4
  • 5
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 4; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 3
  • POMD
  • 3
  • 1
  • 5
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Density calibration data
  • Density calibration data
  • Density calibration data
  • 10
  • POMD
  • 3
  • 1
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Visual Observation
  • 8
  • POMD
  • 3
  • 1
  • 5
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 3
  • POMD
  • 3
  • 1
  • 5
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 3; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 8
  • POMD
  • 3
  • 1
  • 5
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 3; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Vibrating tube method
  • 3