Activity coefficient at infinite dilution measurements for organic solutes (polar and non-polar) in fatty compounds – Part II: C18 fatty acids

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dc.contributor.authorChiavone Filho, Osvaldo
dc.contributor.authorBelting, Patrícia Castro
dc.contributor.authorRarey, Jürgen
dc.contributor.authorGmehling, Jürgen
dc.contributor.authorCeriani, Roberta
dc.contributor.authorMeirelles, Antonio José de Almeida
dc.date.accessioned2021-11-23T12:41:50Z
dc.date.available2021-11-23T12:41:50Z
dc.date.issued2013-05
dc.description.resumoIn this work, activity coefficients at infinite dilution (c113) have been measured for 21 solutes (subscript 1) (alkanes, cycloalkanes, alkenes, aromatic compounds, alcohols, esters, ketones, and halogenated hydro carbons), in four solvents (subscript 3), namely one saturated fatty acid and three unsaturated fatty acids: stearic (octadecanoic) acid – C18:0, oleic (cis-9-octadecenoic) acid – C18:1 9c, linoleic (cis,cis-9,12- octadecadienoic) acid – C18:2 9c12c, and linolenic (cis,cis,cis-9,12,15-octadecatrienoic) acid – C18:3 9c12c15c, by gas–liquid chromatography. The measurements were carried out at temperatures from (303.13 to 368.19) K and the partial molar excess Gibbs free energy (DGE;11 ), enthalpy (DHE;11 ), and entropy (DSE;11 ), at infinite dilution were calculated from experimental c113 values obtained over the tem- perature range. The uncertainties in determination of c113 and DHE;11 are 4% and 20%, respectively. The results for stearic acid obtained in this study have been compared to those available in the Dortmund Data Bank (DDB). The real behaviour of fatty systems could be better understood through the results obtained in this workpt_BR
dc.identifier.citationBELTING, P. C.; RAREY, J.; GMEHLING, J.; CERIANI, R.; CHIAVONE-FILHO, Osvaldo; MEIRELLES, A. J. A.. Activity coefficient at infinite dilution measurements for organic solutes (polar and non-polar) in fatty compounds - Part II: C18 fatty acids. Journal of Chemical Thermodynamics, v. 60, p. 142-149, 2013. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0021961412004661?via%3Dihub. Acesso em: 22 jun. 2021. https://doi.org/10.1016/j.jct.2012.12.009.pt_BR
dc.identifier.doi10.1016/j.jct.2012.12.009
dc.identifier.issn1934-7383
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/44979
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.rightsAttribution-NonCommercial 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/br/*
dc.subjectStearic acidpt_BR
dc.subjectOleic acidpt_BR
dc.subjectLinoleic acidpt_BR
dc.subjectLinolenic acidpt_BR
dc.subjectLimiting activity coefficientpt_BR
dc.subjectGas–liquid chromatography methodpt_BR
dc.titleActivity coefficient at infinite dilution measurements for organic solutes (polar and non-polar) in fatty compounds – Part II: C18 fatty acidspt_BR
dc.typearticlept_BR

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