CO2 + Methanol + Glycerol: Multiphase behaviour

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The phase behaviour of the system CO2 + methanol + glycerol has been studied at low concentrations of this tri-alcohol. 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.

Original languageEnglish
Pages (from-to)260-264
Number of pages5
JournalJournal of Supercritical Fluids
DOIs
Publication statusPublished - Nov 2017

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