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

Liquid Liquid Equilibria for the Quaternary Systems of Water + N-Methyl-2-pyrrolidone + 1-Hexanol + NaCl, + KCl, or + KAc

Chen, J. -T.[Jui-Tang], Chen, M.-C.[Ming-Chung]
J. Chem. Eng. Data 2008, 53, 1, 217-222
ABSTRACT
Liquid liquid equilibrium data have been measured for one ternary system of water + N-methyl-2-pyrrolidone + 1-hexanol and three quaternary systems of water + N-methyl-2-pyrrolidone + 1-hexanol + sodium chloride, + potassium chloride, or + potassium acetate at temperatures (283.15 and 323.15) K under atmospheric pressure. The liquid-phase splitting for the ternary system of water + N-methyl-2-pyrrolidone + 1-hexanol can be enhanced by adding the same percentage of salts (sodium chloride, potassium chloride, or potassium acetate), and the influence follows the order of sodium chloride greater than potassium chloride greater than potassium acetate. The experimental data were also compared with the values calculated by the electrolyte-NRTL model. In general, the model reproduces reasonably for the LLE phase diagrams.
Compounds
# Formula Name
1 C5H9NO N-methylpyrrolidone
2 C6H14O hexan-1-ol
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
  • 2
  • 3
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:8
  • 2
  • POMD
  • 2
  • 3
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • CHROM:UFactor:6
  • 2
  • POMD
  • 2
  • 1
  • 3
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • CHROM:UFactor:6
  • CHROM:UFactor:6
  • CHROM:UFactor:6
  • 16