Vapor-liquid equilibria for binary mixtures of carbon dioxide and fatty acid ethyl esters
1989; Elsevier BV; Volume: 50; Issue: 3 Linguagem: Inglês
10.1016/0378-3812(89)80298-5
ISSN1879-0224
AutoresRagunath Bharath, Hiroshi Inomata, Kunio Arai, Kazuo Shoji, Yasuhisa Noguchi,
Tópico(s)Chemical Thermodynamics and Molecular Structure
ResumoVapor-liquid equilibria were measured and correlated using the Peng-Robinson equation of state for five binary systems of carbon dioxide and fatty acid ethyl esters (ethyl stearate, ethyl oleate, ethyl linoleate, ethyl eicosapentanoate, ethyl docosahexanoate) at 313.15 K, 323.15 K and 333.15 K. Solubility in CO2 of fatty acid ethyl esters of equal chain length but of various degrees of unsaturation was compared. Although there was no distinct difference in solubility at lower pressures, at higher pressures (more than 15 MPa), those with a higher degree of unsaturation showed a slightly higher solubility. When the solubility in CO2 of methyl esters and the corresponding ethyl esters were compared, it was noted that the former showed a slightly higher solubility at all system pressures measured in this work.
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