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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Activity coefficient at infinite dilution measurements for organic solutes (polar and non-polar) in fatty compounds: Saturated fatty acids

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Author(s):
Belting, Patricia C. [1, 2] ; Rarey, Juergen [2] ; Gmehling, Juergen [2] ; Ceriani, Roberta [3] ; Chiavone-Filho, Osvaldo [4] ; Meirelles, Antonio J. A. [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Campinas, Fac Food Engn, Dept Food Engn, BR-13083970 Campinas, SP - Brazil
[2] Carl von Ossietzky Univ Oldenburg, Tech Chem FK V, D-26111 Oldenburg - Germany
[3] Univ Estadual Campinas, Fac Chem Engn, BR-13083852 Campinas, SP - Brazil
[4] Univ Fed Rio Grande do Norte, Dept Chem Engn, BR-59066800 Natal, RN - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF CHEMICAL THERMODYNAMICS; v. 55, p. 42-49, DEC 2012.
Web of Science Citations: 6
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. (AU)

FAPESP's process: 10/16634-0 - Separation processes by stripping in the fat and oil industry
Grantee:Roberta Ceriani
Support Opportunities: Regular Research Grants
FAPESP's process: 09/54137-1 - Acquisition of a particle size/distribution analyzer, a zeta potential measurement system, a spray dryer, and an ultra-high-pressure liquid chromatograph/mass spectrometer
Grantee:Miriam Dupas Hubinger
Support Opportunities: Multi-user Equipment Program