Application of SAFT-VRX to binary phase behaviour: Alkanes

Lixin Sun, Honggang Zhao, Sergei B. Kiselev, Clare McCabe*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


In previous work, we developed the crossover SAFT-VR equation of state (SAFT-VRX) for pure fluids by following the crossover approach proposed by Kiselev. The SAFT-VRX equation was shown to be very accurate in the prediction of PVT and phase behaviour for both non-associating and associating fluids. In particular, simple expressions for the potential model parameters for the n-alkane homologous series were developed, allowing the prediction of the thermodynamic properties without fitting to experimental data. In this work, we have applied the SAFT-VRX equation to binary mixtures of short-chain n-alkanes, using the prescriptions for the model parameters developed previously to determine the pure fluid parameters. The SAFT-VRX equation is found to accurately predict the gas-liquid critical locus and vapor-liquid equilibrium data for the systems studied without fitting to binary experimental mixture data.

Original languageEnglish
Pages (from-to)275-282
Number of pages8
JournalFluid Phase Equilibria
Publication statusPublished - Feb 2005


  • Alkanes
  • Binary mixtures
  • Equation of state
  • Hydrocarbons
  • Phase equilibria
  • SAFT

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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