High-Pressure Solubility Data for Palm Oil-SF6 and Coconut OiI-SF6 Systems

摘要

High-pressure vapor—liquid-phase equilibria (P—T—x—y) for the palm oil—SF6 and coconut oil—SF6 systems were investigated at temperatures of (313.15 and 333.15) K in the pressure range from (1 to 50) MPa. The phase behavior of two vegetable oils in sulfur hexafluoride (SF6) was studied using an isothermal—analytical method in combination with a visual-synthetic method using a variable-volume cell. For both systems, at the lower investigated temperature of 313.15 K, the transition from a two-phase system to a three-phase system was observed visually under conditions near the phase transition of SF6 from a vapor to a liquid phase. Moreover, the phase inversions for the vegetable oil-SF6 systems were also recorded at both temperatures under investigation.