期刊
JOURNAL OF SUPERCRITICAL FLUIDS
卷 141, 期 -, 页码 260-264出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.supflu.2017.12.032
关键词
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资金
- Fundacao para a Ciencia e Tecnologia (Portugal) [ERA-CHEM/2008/000, PTDC/EQU-EPR/103505/2008, Pest-C/EQB/LA0006/2013, SFRH/BPD/72095/2010]
- Fundação para a Ciência e a Tecnologia [PTDC/EQU-EPR/103505/2008] Funding Source: FCT
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.
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