Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Ternary liquid liquid equilibria of trifluorotris(perfluoroethyl)phosphate based ionic liquids + methanol + heptane

Wlazlo, M.[Michal], Marciniak, A.[Andrzej]
Fluid Phase Equilib. 2013, 338, 253-256
ABSTRACT
Ionic liquids: (4-(2-methoxyethyl)-4-methylmorpholinium trifluorotris(perfluoroethyl)phosphate, 1- (2-methoxyethyl)-1-methylpiperidinium trifluorotris(perfluoroethyl)phosphate, 1-(2-methoxyethyl)- 1-methylpyrrolidinium) trifluorotris(perfluoroethyl)phosphate have been investigated in separation of heptane/methanol mixture which form an azeotrope. Three systems of ternary liquid liquid equilibria containing mentioned ionic liquids + methanol + heptane have been determined at T = 298.15 K. All systems show total miscibility of methanol in the ionic liquid and low solubility of heptane. The experimental results have been correlated using NRTL model. The selectivity and the solute distribution ratio have been calculated for all systems. High selectivities and solute distribution ratios have been obtained for all systems. Experimental tie-lines as well as selectivities and solute distribution ratios are compared with other ionic liquids. The influence of cation and anion structure on phase equilibria is discussed.
Compounds
# Formula Name
1 C14H18F18NO2P 4-(2-methoxyethyl)-4-methylmorpholinium trifluorotris(perfluoroethyl)phosphate
2 C15H20F18NOP 1-(2-methoxyethyl)-1-methylpiperidinium trifluorotris(perfluoroethyl)phosphate
3 C14H18F18NOP 1-(2-methoxyethyl)-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate
4 CH4O methanol
5 C7H16 heptane
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
  • 5
  • 1
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 20
  • POMD
  • 4
  • 5
  • 2
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 18
  • POMD
  • 4
  • 5
  • 3
  • Mole fraction - 4 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 4 ; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 22