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

Liquid-Liquid Equilibria in Binary Mixtures of 1,3-Propanediol + Ionic Liquids [bmim][PF6], [bmim][BF4], and [emim][BF4]

Shiflett, M. B.[Mark B.], Yokozeki, A.
J. Chem. Eng. Data 2007, 52, 4, 1302-1306
ABSTRACT
Binary liquid-liquid equilibria (LLE) in mixtures of 1,3-propanediol and three ionic liquids have been measured using the volumetric and cloud-point methods. The room-temperature ionic liquids studied are 1-butyl-3-methylimidazolium hexafluorophosphate [bmim][PF6], 1-butyl-3-methylimidazolium tetrafluoroborate [bmim]- [BF4], and 1-ethyl-3-methylimidazolium tetrafluoroborate [emim][BF4]. All three binary systems show upper critical solution temperatures (UCSTs), with about 299 K for [bmim][BF4], about 310 K for [emim][BF4], and about 360 K for [bmim][PF6]. The limited solubility behaviors with UCSTs are similar to the cases of various monoalcohols with ionic liquids reported in the literature. Observed LLE are well correlated by use of the nonrandom two liquid (NRTL) solution model.
Compounds
# Formula Name
1 C3H8O2 propan-1,3-diol
2 C8H15F6N2P 1-butyl-3-methylimidazolium hexafluorophosphate
3 C8H15BF4N2 1-butyl-3-methylimidazolium tetrafluoroborate
4 C6H11BF4N2 1-ethyl-3-methylimidazolium tetrafluoroborate
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pycnometric method
  • 5
  • POMD
  • 1
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 3
  • POMD
  • 1
  • 2
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 8
  • POMD
  • 1
  • 2
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 8
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • volumetric method
  • 8
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • volumetric method
  • 8
  • POMD
  • 1
  • 3
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 1
  • POMD
  • 1
  • 3
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 4
  • POMD
  • 1
  • 3
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 4
  • POMD
  • 1
  • 3
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • volumetric method
  • 4
  • POMD
  • 1
  • 3
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • volumetric method
  • 4
  • POMD
  • 1
  • 4
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 2
  • POMD
  • 1
  • 4
  • Molar volume, m3/mol ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Pycnometric method
  • 6
  • POMD
  • 1
  • 4
  • Molar volume, m3/mol ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Pycnometric method
  • 6
  • POMD
  • 1
  • 4
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 6
  • POMD
  • 1
  • 4
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • volumetric method
  • 6