Fluid Phase Equilibria, Vol.173, No.1, 109-119, 2000
Liquid-liquid equilibria of multi-component systems including n-hexane, n-octane, benzene, toluene, xylene and sulfolane at 298.15 K and atmospheric pressure
Liquid-liquid equilibrium (LLE) data were measured at 298.15 K and atmospheric pressure for six ternary systems: n-hexane+benzene+sulfolane, n-hexane+toluene+sulfolane, n-hexane+xylene+sulfolane, n-octane+benzene + sulfolane, n-octane + toluene + sulfolane, n-octane + xylene + sulfolane; three quaternary systems : n-hexane + n-octane + benzene + sulfolane, n-hexane + benzene + toluene + sulfolane and n-octane + toluene + xylene + sulfolane; one quinary system : n-hexane + n-octane + benzene + toluene + sulfolane. The equilibrium data of ternary systems were used to regress interaction parameters in non-random two-liquid (NRTL) equation. These parameters were directly used to predict equilibrium data of quaternary and quinary systems. The predicted data are in good agreement with experimental data.