HIGH-PRESSURE VAPOR-LIQUID-EQUILIBRIA FOR ETHYLENE PLUS 4-METHYL-1-PENTENE AND 1-BUTENE PLUS 1-HEXENE

Isothermal vapor-liquid equilibria (VLE) for the ethylene + 4-methyl-1 -pentene and l-butene + l-hexene binary systems were measured by the s tatic method at several temperatures for pressures in the range (0.3 t o 8.5) MPa. Representations of VLE data by the Soave and Peng-Robinson cubic equations of state are compared in both modes: predictive and b inary parameter adjustment. As the two binary systems behave almost id eally, there is no significant difference between their representation qualities through both equations of state.