Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Experimental Determination of Phase Equilibrium in Aqueous Two-Phase Systems Containing Ionic Liquids and Sodium Salts at Different Temperatures

Li, Y.[Yuliang], Wu, Y.[Yajing]
J. Chem. Eng. Data 2015, 60, 7, 2003-2017
ABSTRACT
The binodal curves of 1-butyl-3-methylpyridinium tetrafluoroborate ([3-MBP][BF4]) + NaH2PO4/Na2SO4 + H2O aqueous two-phase systems (ATPSs) at T = (310.15, 318.15, and 327.15) K were experimentally determined. Three nonlinear equations were fit to the binodal data. Tie-line data were fit to the Othmer Tobias, Bancroft, two-parameter, and Setschenow-type equations. The results were consistent with the experimental data. The effective excluded volume (EEV) values were determined using the binodal model for these two systems. According to the binodal curves and tie-line data obtained at different temperatures, the effect of temperature on the ATPSs was also discussed.
Compounds
# Formula Name
1 C10H16BF4N 1-butyl-3-methylpyridinium tetrafluoroborate
2 H2NaO4P sodium dihydrogen phosphate
3 Na2O4S sodium sulfate
4 H2O water
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
  • 2
  • 4
  • 1
  • Mass fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 398
  • POMD
  • 2
  • 4
  • 1
  • Mass fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 30
  • POMD
  • 2
  • 4
  • 1
  • Mass fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 30
  • POMD
  • 4
  • 3
  • 1
  • Mass fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 303
  • POMD
  • 4
  • 3
  • 1
  • Mass fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 30
  • POMD
  • 4
  • 3
  • 1
  • Mass fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 30