Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Experimental solid-liquid-liquid equilibrium data for the H2O + NaOH + pyrrolidine ternary system. Application to theextraction of N-aminopyrrolidine

Frangieh, M. R., Bougrine, A. J., Tenu, R., Counioux, J. J., Dhenain, A., Goutaudier, C.
Fluid Phase Equilib. 2014, 380, 132-139
ABSTRACT
Salting-out using sodium hydroxide is a simple and relevant method of pre-concentrating organiccompounds (amine + hydrazine) in crude synthetic solutions during the preparation of hydrazineproducts. Liquid-liquid, solid-liquid and solid-liquid-liquid equilibria were determined for the pyrrolidine + water + sodium hydroxide ternary system at 283.15 K, 293.15 K and 323.15 K under atmospheric pressure. The reliability of our experimental tie-lines data was confirmed by using the Othmer-Tobias correlation. Distribution coefficients and separation parameters were evaluated for the immiscibility region. Using the data in these isothermal sections, we can deduce the demixing temperature that trans-fers most organic compounds to the upper phase and also the composition of the organic phase recovered after this first extraction step.
Compounds
# Formula Name
1 C4H9N pyrrolidine
2 HNaO sodium hydroxide
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
  • 2
  • 3
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 2 ; Liquid mixture 2
  • Mass fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mass fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 19
  • POMD
  • 1
  • 2
  • 3
  • Mass fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Crystal of intercomponent compound 1
  • titration + gravimetry
  • 3
  • POMD
  • 1
  • 2
  • 3
  • Mass fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Crystal of intercomponent compound 1
  • titration + gravimetry
  • 3
  • POMD
  • 1
  • 2
  • 3
  • Mass fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Crystal of intercomponent compound 1
  • Titration method
  • 3
  • POMD
  • 1
  • 2
  • 3
  • Mass fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Crystal of intercomponent compound 1
  • Titration method
  • 3