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

Liquid-Liquid Equilibria Data of Protic Ionic Liquid (Ethyl-2-hydroxyethylammonium Propionate, Diethylammonium Propionate, or Butylammonium Propionate) with 1-Butanol + Water at 298.15 K

Gomes, R. d. S.[Rossimar dos Santos], Mattedi, S.[Silvana], Santos, G. R.[Geormenny R.]
J. Chem. Eng. Data 2019, 64, 7, 2915-2922
ABSTRACT
Liquid-liquid equilibrium (LLE) data for systems involving 1-butanol + water + protic ionic liquids ethyl-2-hydroxyethylammonium propionate [E2HEA][Pr], diethylammonium propionate [DEA]]Pr], or butylammonium propionate [BA][Pr] were determined at 298.15 K and atmospheric pressure. The solubility curves were obtained by the cloud point method and correlated with different empirical equations. The compositions of the phases in equilibrium were determined based on the fitting equation of the binodal curve and the lever rule. Data quality was verified using the semi-empirical methods by Othmer-Tobias and Hand. The liquid-liquid equilibrium data was correlated using the non-random two liquid model (NRTL) and UNIversal QUAsi Chemical (UNIQUAC) model and good fit was found between the correlations and the experimental data, yielding overall root-meansquare deviations of 1.56% for NRTL and 1.78% for UNIQUAC.
Compounds
# Formula Name
1 C4H10O butan-1-ol
2 H2O water
3 C7H17NO3 N-ethyl-2-hydroxyethylammonium propionate
4 C7H17NO2 diethylammonium propanoate
5 C7H17NO2 butylammonium propanoate
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
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 28
  • POMD
  • 1
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 3 ; Liquid mixture 2
  • Mass fraction - 1; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Phase equilibration
  • Phase equilibration
  • Phase equilibration
  • 5
  • POMD
  • 1
  • 2
  • 4
  • Mass fraction - 4 ; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 21
  • POMD
  • 1
  • 2
  • 4
  • Mass fraction - 4 ; Liquid mixture 2
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 4 ; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Phase equilibration
  • Phase equilibration
  • Phase equilibration
  • 4
  • POMD
  • 1
  • 2
  • 5
  • Mass fraction - 5 ; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 14
  • POMD
  • 1
  • 2
  • 5
  • Mass fraction - 5 ; Liquid mixture 2
  • Mass fraction - 5 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Phase equilibration
  • Phase equilibration
  • Phase equilibration
  • 3