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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleIsobaric (vapor plus liquid) equilibria of 1-ethyl-3-methylimidazolium ethylsulfate plus (propionaldehyde or valeraldehyde): Experimental data and predictionpt_BR
dc.contributor.authorAlvarez, VHpt_BR
dc.contributor.authorMattedi, Spt_BR
dc.contributor.authorAznar, Mpt_BR
unicamp.authorAlvarez, Victor H. Aznar, Martin Univ Campinas UNICAMP, Sch Chem Engn, BR-13083852 Campinas, SP, Brazilpt_BR
unicamp.authorMattedi, Silvana Fed Univ Bahia UFBA, Polytech Sch, Dept Chem Engn, BR-40210630 Salvador, BA, Brazilpt_BR
dc.subject(Vapor plus liquid) equilibriapt_BR
dc.subjectProtic ionic liquidpt_BR
dc.subjectMolecular interactionspt_BR
dc.subject.wosIonic Liquidspt_BR
dc.description.abstractThis paper reports the density, refraction index, and (vapor + liquid) equilibria (VLE) for binary systems {aldehyde + 1-ethyl-3-methylimidazolium ethylsulfate ([emim][EtSO(4)])}: {propionaldehyde + [emim][EtSO(4)]} and {valeraldehyde + [emim][EtSO(4)]}. The uncertainties for the temperature, pressure, and compositions measurements for the phase equilibria are +/- 0.1 K, +/- 0.01 kPa and +/- 0.0004, respectively. A qualitative analysis of the variation of the properties with changes in solvent and temperature was performed. The Peng-Robinson equation of state (PR EoS), coupled with the Wong-Sandler mixing rule (WS), is used to describe the experimental data. To calculate activity coefficients we used three different models: NRTL, UNIQUAC, and COSMO-SAC. Since the predictive liquid activity coefficient model COSMO-SAC is used in the Wong-Sandler mixing rule, the resulting thermodynamic model is a completely predictive one. The prediction results for the density and for the (vapor + liquid) equilibria have a deviation lower than 2.3% and 1.6%, respectively. The (vapor + liquid) equilibria predictions show a good description for the propionaldehyde system and only a qualitative description for the valeraldehyde system. (C) 2011 Elsevier Ltd. All rights
dc.relation.ispartofJournal Of Chemical Thermodynamicspt_BR
dc.relation.ispartofabbreviationJ. Chem. Thermodyn.pt_BR
dc.publisherAcademic Press Ltd- Elsevier Science Ltdpt_BR
dc.identifier.citationJournal Of Chemical Thermodynamics. Academic Press Ltd- Elsevier Science Ltd, v. 43, n. 6, n. 895, n. 900, 2011.pt_BR
dc.sourceWeb of Sciencept_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsordocumentnumberFAPESP [06/03711-1]pt
dc.description.provenanceMade available in DSpace on 2014-07-30T14:35:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2011en
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