Phase behavior measurement for the system CO2 + glycerol + ethanol at high pressures

This work reports phase equilibrium measurements for the ternary system CO2 + glycerol + ethanol. Experiments were performed in a high pressure variable-volume view cell at temperatures ranging from 303.15 K to 343.15 K and pressures up to 26 MPa. The CO2 molar fraction varied from 0.1308 to 0.9871, and glycerol to ethanol molar ratios studied were 1:12, 1:20, and 1:30. For the systems investigated, vapor–liquid (VL), liquid–liquid (LL), and vapor–liquid–liquid (VLL) phase transitions were observed. Phase equilibrium data measured for the ternary system aim the better understanding of the phase behavior knowledge of the glycerol in the ethanol + CO2 mixture at high pressure system.