Unlike Lennard-Jones parameters for vapor-liquid equilibria

摘要: Abstract The influence of the unlike Lennard–Jones (LJ) parameters on vapor–liquid equilibria mixtures is investigated and performance eleven combining rules assessed. In first part this work, LJ size energy parameter vapor pressure, bubble density dew point composition systematically studied for CO + C2H6 N2 + C3H6, respectively. It found that mixture pressure depends strongly both whereas mostly rather insensitive to parameters. preceding were adjusted experimental binary 44 real mixtures. On basis these results, in second work are assessed regarding their predictive power. A comparison with determined from fit shows none yields appropriate general. To obtain an accurate model, dispersive interaction should therefore be data. results present indicate it sufficient use Lorenz rule pressure.