CO2+Methanol+Glycerol : multiphase behaviour

Carrera, Gonçalo V. S. M.; Visak, Zoran P.; Lukasik, Rafal M.; Ponte, Manuel Nunes

http://hdl.handle.net/10400.9/3123

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Authors

Carrera, Gonçalo V. S. M.

Visak, Zoran P.

Lukasik, Rafal M.

Ponte, Manuel Nunes

Abstract(s)

ABSTRACT: The phase behaviour of the system CO2+methanol+glycerol has been studied at low concentrations of this trialcohol. The synthetic method was implemented in a visual sapphire cell. New phase diagrams were obtained at temperatures of 313.15 and 333.15 K. Different methanol/glycerol molar ratios of 113, 50 and 30 were considered and its influence on phase behaviour accounted for. Pressures were varied from 6.03 to 11.44 MPa. A specific experiment is reported, starting from an initial volume of 4 mL of liquid mixture methanol+glycerol (methanol/glycerol molar ratio 30), where, with a stepwise addition of CO2, diverse fluid phase phenomena were detected, such as VLE, Critical Point, VLLE, VLLLE, LLE and LE.

Keywords

Supercritical carbon dioxide Glycerol Liquid-liquid equilibrium

URI

http://hdl.handle.net/10400.9/3123

Citation

Carrera, Gonçalo V.S.M... [et.al.] - CO2+Methanol+Glycerol : multiphase behaviour. In: The Journal of Supercritical Fluids, 2018, Vol. 141, p. 260-264