Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/20305
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dc.contributor.authorPassos, Helenapt
dc.contributor.authorKhan, Imranpt
dc.contributor.authorMutelet, Fabricept
dc.contributor.authorOliveira, Mariana B.pt
dc.contributor.authorCarvalho, Pedro J.pt
dc.contributor.authorSantos, Luis M. N. B. F.pt
dc.contributor.authorHeld, Christophpt
dc.contributor.authorSadowski, Gabrielept
dc.contributor.authorFreire, Mara G.pt
dc.contributor.authorCoutinho, Joao A. P.pt
dc.date.accessioned2017-12-07T19:42:29Z-
dc.date.issued2014pt
dc.identifier.issn0888-5885pt
dc.identifier.urihttp://hdl.handle.net/10773/20305-
dc.description.abstractThe industrial application of ionic liquids (ILs) requires the knowledge of their physical properties and phase behavior. This work addresses the experimental determination of the vapor-liquid equilibria (VLE) of binary systems composed of water + imidazolium-based ILs. The ILs under consideration are 1-butyl-3-methylimidazolium trifluoromethanesulfonate, 1-butyl-3-methylimidazolium thiocyanate, 1-butyl-3-methylimidazolium tosylate, 1-butyl-3-methylimidazolium trifluoroacetate, 1-butyl-3-methylimidazolium bromide, 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium methanesulfonate, and 1-butyl-3-methylimidazolium acetate, which allows the evaluation of the influence of the IL anion through the phase behavior. Isobaric VLE data were measured at 0.05, 0.07, and 0.1 MPa for IL mole fractions ranging between 0 and 0.7. The observed increase in the boiling temperatures of the mixtures is related with the strength of the interaction between the IL anion and water. The Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) was further used to describe the obtained experimental data. The ILs were treated as molecular associating species with two association sites per IL. The model parameters for the pure fluids and the binary interaction parameter k(ij) between water and ILs were determined by a simultaneous fitting to pure-IL densities, water activity coefficients at 298.15 K and VLE data at 0.1 MPa. Pure-IL densities, water activity coefficients, and VLE data were well described by PC-SAFT in broad temperature, pressure, and composition ranges. The PC-SAFT parameters were applied to predict the water activity coefficients at infinite dilution in ILs, and a satisfactory prediction of experimental data was observed.pt
dc.language.isoengpt
dc.publisherAMER CHEMICAL SOCpt
dc.relationinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/121520/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/COMPETE/132936/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F71200%2F2010/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F76850%2F2011/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F85248%2F2012/PTpt
dc.rightsrestrictedAccesspor
dc.subjectINFINITE DILUTION MEASUREMENTSpt
dc.subjectDIRECTIONAL ATTRACTIVE FORCESpt
dc.subjectAQUEOUS BIPHASIC SYSTEMSpt
dc.subject2ND VIRIAL COEFFICIENTSpt
dc.subjectEQUATION-OF-STATEpt
dc.subjectORGANIC SOLUTESpt
dc.subjectTHERMODYNAMIC PROPERTIESpt
dc.subjectPRESSURE MEASUREMENTpt
dc.subjectPHYSICOCHEMICAL PROPERTIESpt
dc.subjectBINARY-SYSTEMSpt
dc.titleVapor-Liquid Equilibria of Water plus Alkylimidazolium-Based Ionic Liquids: Measurements and Perturbed-Chain Statistical Associating Fluid Theory Modelingpt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage3737pt
degois.publication.issue9pt
degois.publication.lastPage3748pt
degois.publication.titleINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCHpt
degois.publication.volume53pt
dc.date.embargo10000-01-01-
dc.relation.publisherversion10.1021/ie4041093pt
dc.identifier.doi10.1021/ie4041093pt
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