Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/76304
Type: Artigo de periódico
Title: A new method for estimating solubility of fatty acids, esters, and triglycerides in supercritical carbon dioxide
Author: Vasconcellos, VR
Cabral, FA
Abstract: A method to predict solubility of fat compounds (fatty acids, fatty acid esters, and triglycerides) in supercritical CO2 in the absence of experimental data is presented. The method is based on the idea of group contribution, so only knowledge about the chemical structure of the substance is needed to predict its solubility in CO2. Chrastil's equation was used to correlate the solubilities of fatty acids, fatty acid esters, and triglycerides in CO2. The three parameters determined from fitting of the data were calculated. A nonlinear fit routine was used to determine the chemical group contributions to the three parameters. Analysis of the results shows that it is possible to correlate the parameters of Chrastil's equation to molecular groups. The average deviation from the experimental data was 8%.
Subject: chrastil equation
fatty acid esters
fatty acids
group contribution method
prediction of solubility
supercritical carbon dioxide
Country: EUA
Editor: Amer Oil Chemists Soc A O C S Press
Rights: fechado
Identifier DOI: 10.1007/s11746-001-0350-8
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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