Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Measurement and equation of state prediction of vapor-liquid equilibrium and physical properties for the system methane + n-octadecane

Kariznovi, M.[Mohammad], Nourozieh, H.[Hossein], Abedi, J.[Jalal]
Fluid Phase Equilib. 2012, 314, 102-106
ABSTRACT
The vapor-liquid equilibrium (VLE) data for binary system of methane + n-octadecane at four temperatures T = (323, 348, 398, and 448) K were measured using a designed pressure-volume-temperature (PVT) apparatus. The phase composition and density and viscosity of saturated liquid phase were measured for pressures up to 10 MPa. The experimental VLE data were compared with the modeling results obtained using the Peng-Robinson and Soave-Redlich-Kwong equations of state. Two approaches, a single temperature-independent interaction parameter and temperature-dependent interaction parameter, were considered to fit the generated experimental data.
Compounds
# Formula Name
1 CH4 methane
2 C18H38 octadecane
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 24
  • POMD
  • 1
  • 2
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Moving piston method
  • 24
  • POMD
  • 1
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 24
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Vibrating tube method
  • 24