Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Experimental and theoretical study on liquid liquid equilibrium of 1-butanol + water + NH4Cl at 298.15, 308.15 and 318.15 K

Pirahmadi, F.[Fatemeh], Dehghani, M. R.[Mohammad Reza], Behzadi, B.[Bahman]
Fluid Phase Equilib. 2012, 325, 1-5
ABSTRACT
In this work, the phase behavior of mixed solvent electrolyte systems containing 1-butanol + water + ammonium chloride at temperatures of 298.15, 308.15 and 318.15 K and at atmospheric pressure have been studied experimentally and theoretically. For the studied systems, liquid-liquid equilibrium has been observed throughout the studied temperature range. Ammonium chloride shows a salting out effect in the two phase region, while temperature has a minor effect on the liquid-liquid equilibria in the studied temperature range. The measured experimental data have been modeled using a modified version of the extended UNIQUAC model. The model has been found to give a satisfactory description of LLE data obtained in this work, with an average absolute deviation of less than 1.5% in calculated mass fractions compared to experimental data.
Compounds
# Formula Name
1 C4H10O butan-1-ol
2 ClH4N ammonium chloride (NH4Cl)
3 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
  • 1
  • 3
  • 2
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 3; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 26