Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Phase equilibrium relations for binary mixed hydrate systemscomposed of carbon dioxide and cyclopentane derivatives

Matsumoto, Y.[Yuuki], Makino, T.[Takashi], Sugahara, T.[Takeshi], Ohgaki, K.[Kazunari]
Fluid Phase Equilib. 2014, 362, 379-382
ABSTRACT
Thermodynamic stability boundaries of carbon dioxide + cyclopentane, carbon dioxide + cyclopentanone,and carbon dioxide + fluorocyclopentane mixed hydrates have been investigated in the range of 274.19 to 293.72 K and up to 4.88 MPa. The phase equilibrium curves of the structure-II mixed hydrates are located at a temperature remarkably higher than that of the structure-I simple carbon dioxide hydrate.The highest temperature point of each four-phase (hydrate, aqueous, cyclopentane derivative-rich, and gas phases) equilibrium curve was 292.60 K (for the first system), 284.78 K (for the second system), and 293.72 K (for the third system).
Compounds
# Formula Name
1 C5H10 cyclopentane
2 C5H8O cyclopentanone
3 C5H9F fluorocyclopentane
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 6
  • POMD
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 6
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 6