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Type: Artigo de periódico
Title: Activity coefficient at infinite dilution measurements for organic solutes (polar and non-polar) in fatty compounds: Saturated fatty acids
Author: Belting, PC
Rarey, J
Gmehling, J
Ceriani, R
Chiavone, O
Meirelles, AJA
Abstract: The activity coefficients at infinite dilution, gamma(infinity)(13) (the subscript 1 and 3 correspond to solute and solvent, respectively), for 21 solutes, including alkane, cycloalkane, alkene, aromatic compounds, alcohol, ester, ketone, and halogenated hydrocarbons, in four solvents, that are the saturated fatty acids: capric (decanoic) acid, lauric (dodecanoic) acid, myristic (tetradecanoic) acid, and palmitic (hexadecanoic) acid, were determined by gas-liquid chromatography at temperatures from 314.10 K to 358.33 K. Comparison with previously published for selected solutes in palmitic (hexadecanoic) acid were also performed. The values of the partial molar excess Gibbs free energy, Delta G(13)(infinity), enthalpy, Delta H-13(infinity), and entropy, Delta S-13(infinity), at infinite dilution were calculated from experimental gamma(infinity)(13) values obtained over the temperature range. Results obtained in this work allow a more accurate description of the real behavior of fatty systems. (C) 2012 Elsevier Ltd. All rights reserved.
Subject: Capric acid
Lauric acid
Myristic acid
Palmitic acid
Limiting activity coefficient
Gas-liquid chromatography method
Country: Inglaterra
Editor: Academic Press Ltd- Elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.jct.2012.06.009
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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