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

Density and Compressibility of Multicomponent n-Alkane Mixtures up to 463 K and 140 MPa

Regueira, Teresa, Glykioti, Maria-Lito, Stenby, Erling H., Yan, Wei
J. Chem. Eng. Data 2018, 63, 4, 1072-1080
ABSTRACT
Density measurements of two ternary alkane mixtures (methane/n-butane/n-decane and methane/nbutane/ n-dodecane) and two multicomponent mixtures composed of methane/n-butane/n-octane/ndodecane/ n-hexadecane/n-eicosane were performed in the temperature range from (278.15 to 463.15)K and pressures up to 140 MPa. The isothermal compressibility values of these mixtures were obtained by differentiation from a Tait type fitting of experimental densities as a function of temperature and pressure. Excess volume of the studied mixtures was also determined. Four different equations of state, i.e. Soave-Redlich-Kwong (SRK), Peng-Robinson (PR), Perturbed Chain Statistical Associating Fluid Theory (PC-SAFT), and Soave-Benedict-Webb-Rubin (Soave- BWR) were used for predicting the experimental density values as well as the excess volumes.
Compounds
# Formula Name
1 CH4 methane
2 C4H10 butane
3 C10H22 decane
4 C12H26 dodecane
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
  • 2
  • 3
  • Mass density, kg/m3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 1; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Vibrating tube method
  • 42
  • POMD
  • 1
  • 2
  • 4
  • Mass density, kg/m3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 1; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Vibrating tube method
  • 36