Abstract
New experimental vapor–liquid equilibrium data of the N 2– n-nonane system were measured over a wide temperature range from 344.3 to 543.4 K and pressures up to 50 MPa. A static-analytical apparatus with visual sapphire windows and pneumatic capillary samplers was used in the experimental measurements. Equilibrium phase compositions and vapor–liquid equilibrium ratios are reported. The new results were compared with those reported by other authors. The comparison showed that the pressure-liquid phase composition data reported in this work are in good agreement with those determined by others. The experimental data were modeled with the PR and PC-SAFT equations of state by using one-fluid mixing rules and a single temperature-independent interaction parameter. Results of the modeling showed that the PC-SAFT equation was superior to the PR equation in correlating the experimental data of the N 2– n-nonane system.
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