Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Salting effect on the liquid liquid equilibria for the ternary system water +N-methyl-2-pyrrolidone + 1-pentanol

Chen, J. -T.[Jui-Tang], Chen, M.-C.[Ming-Chung]
Fluid Phase Equilib. 2008, 266, 1-2, 1-7
ABSTRACT
Liquid liquid equilibrium (LLE) data have been measured for one ternary system of water + N-methyl-2-pyrrolidone + 1-pentanol, and three quaternary systems of water + N-methyl-2-pyrrolidone + 1-pentanol + sodium chloride, +potassium chloride, or +potassium acetate at temperatures 283.15 and 323.15K under atmospheric pressure. The liquid-phase splitting for ternary system of water + N-methyl-2-pyrrolidone + 1-pentanol 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 C5H12O pentan-1-ol
3 H2O water
4 C2H3KO2 potassium ethanoate
5 ClK potassium chloride
6 ClNa sodium chloride
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 - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • CHROM:UFactor:4
  • 2
  • POMD
  • 2
  • 3
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:4
  • 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:4
  • CHROM:UFactor:4
  • CHROM:UFactor:4
  • 16
  • POMD
  • 2
  • 4
  • 3
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:4
  • CHROM:UFactor:4
  • CHROM:UFactor:4
  • 2
  • POMD
  • 2
  • 5
  • 3
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 2 ; 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:4
  • CHROM:UFactor:4
  • CHROM:UFactor:4
  • 2
  • POMD
  • 2
  • 6
  • 3
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 2 ; 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:4
  • CHROM:UFactor:4
  • CHROM:UFactor:4
  • 2