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

Liquid-Liquid Equilibria for the Binary Systems of N-Formylmorpholine with Cycloalkanes

Ko, M.[MinSu], Na, S.[Sangyoup], Lee, S.[Sungjin], Kim, H.[Hwayong]
J. Chem. Eng. Data 2003, 48, 2, 249-252
ABSTRACT
Liquid-liquid equilibrium (LLE) data were measured for three binary systems containing N-formylmorpholine and cycloalkanes (cyclopentane, cyclohexane, and cyclooctane) over the temperature a circulation type instrument with an equilibrium view cell. The compositions of both cycloalkane-rich and N-formylmorpholine-rich phases were analyzed by on-line gas chromatography. The binary liquid-liquid equilibrium data were correlated with the NRTL and UNIQUAC equations using temperature-dependent parameters. The NRTL and UNIQUAC equations fitted the experimental data of the equilibria with a good precision, although a clear deviation was observed in the vicinity of the upper critical solution temperature (UCST). The properties for the critical point are expressed in terms of an exponential law. The solubility of cycloalkanes in the N-formylmorpholine increases in the following order at the same temperature: cyclopentane, cyclohexane, and cyclooctane.
Compounds
# Formula Name
1 C5H9NO2 N-formylmorpholine
2 C5H10 cyclopentane
3 C6H12 cyclohexane
4 C8H16 cyclooctane
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
  • 1
  • Upper consolute temperature, K ; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Air at 1 atmosphere
  • OTHER
  • 1
  • POMD
  • 2
  • 1
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:8
  • 14
  • POMD
  • 2
  • 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • CHROM:UFactor:8
  • 14
  • POMD
  • 3
  • 1
  • Upper consolute temperature, K ; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Air at 1 atmosphere
  • OTHER
  • 1
  • POMD
  • 3
  • 1
  • 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
  • 13
  • POMD
  • 3
  • 1
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • CHROM:UFactor:8
  • 13
  • POMD
  • 4
  • 1
  • Upper consolute temperature, K ; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Air at 1 atmosphere
  • OTHER
  • 1
  • POMD
  • 4
  • 1
  • Mole fraction - 4 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:8
  • 16
  • POMD
  • 4
  • 1
  • Mole fraction - 4 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • CHROM:UFactor:8
  • 16