Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Phase equilibria of binary mixtures (ionic liquid + aromatic hydrocarbon): Effect of the structure of the components on the solubility

Gonzalez, E. J.[Emilio J.], Requejo, P. F.[Patricia F.], Dominguez, A.[Angeles], Macedo, E. A.[Eugenia A.]
Fluid Phase Equilib. 2013, 360, 416-422
ABSTRACT
In this work, mutual solubilities of 24 binary mixtures containing ionic liquids (1-ethyl-3- methylpyridinium ethylsulfate, 1-ethyl-3-methylpyridinium bis(trifluoromethylsulfonyl)imide, 1-hexyl-3-methylimidazolium dicyanamide and 1-propyl-3-methylpyridinium bis(trifluoromethylsulfonyl)imide) with aromatic hydrocarbons (benzene, toluene, ethylbenzene, o-xylene, m-xylene and p-xylene) were determined in the range T = (293.15 333.15) K and at atmospheric pressure, and the corresponding temperature-composition phase diagrams were obtained from the density of the equilibrium phases. From the experimental data, the effect of the structure of the ionic liquid and the aromatic hydrocarbon on the solubility was analyzed and discussed. The ionic liquids reported in this work show a negligible solubility in the studied aromatic hydrocarbons and the solubility of the aromatic compounds in the ionic liquids decreases in the order benzene greater than toluene greater than ethylbenzene greater than xylene isomers. The experimental results show that solubility is also affected by the ionic liquid structure while the temperature has a very little effect on the phase equilibria. Finally, experimental liquid liquid equilibrium data were satisfactorily correlated using the Non-Random Two-Liquid (NRTL) model.
Compounds
# Formula Name
1 C6H6 benzene
2 C10H17NO4S 1-ethyl-3-methylpyridinium ethylsulfate
3 C7H8 toluene
4 C8H10 ethylbenzene
5 C8H10 1,2-dimethylbenzene
6 C8H10 1,3-dimethylbenzene
7 C8H10 1,4-dimethylbenzene
8 C10H12F6N2O4S2 1-ethyl-3-methylpyridinium bis((trifluoromethyl)sulfonyl)amide
9 C12H19N5 1-hexyl-3-methylimidazolium dicyanamide
10 C11H14F6N2O4S2 3-methyl-1-propylpyridinium bis(trifluoromethylsulfonyl)imide
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
  • 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 3
  • 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 4
  • 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 5
  • 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 6
  • 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 7
  • POMD
  • 7
  • 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 1
  • 8
  • Mole fraction - 8 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 3
  • 8
  • Mole fraction - 8 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 4
  • 8
  • Mole fraction - 8 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 5
  • 8
  • Mole fraction - 8 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 6
  • 8
  • Mole fraction - 8 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 8
  • POMD
  • 7
  • 8
  • Mole fraction - 8 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 1
  • 9
  • Mole fraction - 9 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 3
  • 9
  • Mole fraction - 9 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 4
  • 9
  • Mole fraction - 9 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 8
  • POMD
  • 5
  • 9
  • Mole fraction - 9 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 8
  • POMD
  • 6
  • 9
  • Mole fraction - 9 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 7
  • 9
  • Mole fraction - 9 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 8
  • POMD
  • 1
  • 10
  • Mole fraction - 10 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 3
  • 10
  • Mole fraction - 10 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 4
  • 10
  • Mole fraction - 10 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 5
  • 10
  • Mole fraction - 10 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 8
  • POMD
  • 6
  • 10
  • Mole fraction - 10 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9
  • POMD
  • 7
  • 10
  • Mole fraction - 10 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Density calibration data
  • 9