Improved vapor-liquid equilibria predictions for Lennard-Jones chains from the statistical associating fluid dimer theory: Comparison with Monte Carlo simulations

The vapor-liquid phase equilibria of Lennard-Jones chains with different lengths was studied using statistical associating fluid theory (SAFT). The structural information in te reference fluid was checked by comparing the monomer and dimer versions of the theory to Monte Carlo simulations. Applications of the theoretical approach to study binary mixtures was also discussed. The dimer version was found to provide a better description of vapor pressure associated with the system.