Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Separation of benzene from alkanes using 1-ethyl-3-methylpyridinium ethylsulfate ionic liquid at several temperatures and atmospheric pressure: Effect of the size of the aliphatic hydrocarbons

Gonzalez, E. J.[Emilio J.], Calvar, N.[Noelia], Gomez, E.[Elena], Dominguez, A.[Angeles]
J. Chem. Thermodyn. 2010, 42, 1, 104-109
ABSTRACT
The ionic liquid 1-ethyl-3-methylpyridinium ethylsulfate, [EMpy][ESO4], was studied for the separation of benzene from aliphatic hydrocarbons (octane or nonane) by solvent extraction through the determination of the (liquid + liquid) equilibrium (LLE) of the ternary systems: {octane (1) + benzene (2) + [EMpy][ESO4] (3)} and {nonane (1) + benzene (2) + [EMpy][ESO4] (3)} at T = (283.15 and 298.15) K and atmospheric pressure. Binodal curves were determined using the cloud point method, and tie-line compositions were obtained by density measurements. The values of selectivity and distribution coefficient, derived from the tie-line data, were used to decide if this ionic liquid can be used as potential solvent for the separation of benzene from aliphatic hydrocarbons using liquid extraction. These results were analyzed and compared to those previously reported for the systems {hexane + benzene + [EMpy][ESO4]} and {heptane + benzene + [EMpy][ESO4]}. The experimental results show that this ionic liquid is suitable for the extraction of benzene from mixtures containing octane and nonane. The consistency of 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 model. No literature data were found for the mixtures discussed in this paper
Compounds
# Formula Name
1 C8H18 octane
2 C9H20 nonane
3 C6H6 benzene
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
  • 3
  • 1
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 22
  • POMD
  • 3
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 22
  • POMD
  • 3
  • 1
  • 4
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 16
  • POMD
  • 3
  • 1
  • 4
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Mass Balance
  • 6
  • POMD
  • 3
  • 1
  • 4
  • Mass density, kg/m3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Vibrating tube method
  • 16
  • POMD
  • 3
  • 1
  • 4
  • Mass density, kg/m3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Vibrating tube method
  • 6
  • POMD
  • 3
  • 1
  • 4
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • Density calibration data
  • Density calibration data
  • 17
  • POMD
  • 3
  • 2
  • 4
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 16
  • POMD
  • 3
  • 2
  • 4
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Mass Balance
  • 6
  • POMD
  • 3
  • 2
  • 4
  • Mass density, kg/m3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Vibrating tube method
  • 16
  • POMD
  • 3
  • 2
  • 4
  • Mass density, kg/m3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Vibrating tube method
  • 6
  • POMD
  • 3
  • 2
  • 4
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • Density calibration data
  • Density calibration data
  • 18