Thermodynamics Research Center / ThermoML | Thermochimica Acta

Phase diagram of ionic liquid aqueous two-phase systems with N-butylpyridinium tetrafluoroborate, ammonium Citrate/Sodium acetate, and water from 308.15 K to 328.15 K

Li, Y.[Yuliang], Xu, Z.[Zhongyu], Luo, Q.[Qinxin], Lu, X.[Xiaojia], Hu, J.[Jing]
Thermochim. Acta 2016, 632, 72-78
ABSTRACT
In this study, the phase diagrams and liquid liquid equilibrium data for two-phase systems of N-butylpyridinium tetrafluoroborate ([BPy]BF4) + ammonium citrate ((NH4)3C6H5O7) have been experimentally determined at 308.15 K, 313.15 K, 318.15 K and 328.15 K. Sodium acetate (CH3COONa) + water had also been determined at 308.15 K, 318.15 K and 328.15 K. The binodal data were fit to the Merchuk equation and to two empirical equations with several parameters. Good agreement was obtained among these models.
Compounds
# Formula Name
1 C9H14BF4N 1-butylpyridinium tetrafluoroborate
2 C2H3NaO2 sodium ethanoate
3 H2O water
4 C6H17N3O7 ammonium 2-hydroxypropane-1,2,3-tricarboxylate
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
  • 3
  • 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
  • 252
  • POMD
  • 4
  • 3
  • 1
  • Mass fraction - 4 ; 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
  • 338