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dc.contributor.authorCassol, Cláudia Cristianapt_BR
dc.contributor.authorUmpierre, Alexandre Perezpt_BR
dc.contributor.authorEbeling, Gunterpt_BR
dc.contributor.authorFerrera, Bauer Costapt_BR
dc.contributor.authorChiaro, Sandra Shirley Ximenopt_BR
dc.contributor.authorDupont, Jairtonpt_BR
dc.date.accessioned2023-12-14T03:24:30Zpt_BR
dc.date.issued2007pt_BR
dc.identifier.issn1422-0067pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/268405pt_BR
dc.description.abstractThe liquid-liquid equilibrium for the ternary system formed by n-octane and aromatic (alkylbenzenes) and heteroaromatic compounds (nitrogen and sulfur containing heterocyles) and 1-alkyl-3-methylimidazolium ionic liquids (ILs) associated with various anions has been investigated. The selectivity on the extraction of a specific aromatic compound is influenced by anion volume, hydrogen bond strength between the anion and the imidazolium cation and the length of the 1-methyl-3-alkylimidazolium alkyl side chain. The interaction of alkylbenzenes and sulfur heterocyles with the IL is preferentially through CH-π hydrogen bonds and the quantity of these aromatics in the IL phase decreases with the increase of the steric hindrance imposed by the substituents on the aromatic nucleus. In the case of nitrogen heterocycles the interaction occurs preferentially through N(heteroaromatic)-H(imidazolium) hydrogen bonds and the extraction process is largely controlled by the nitrogen heterocycle pKa. Competitive extraction experiments suggest that benzene, pyridine and dibenzothiophene do not compete for the same hydrogen bond sites of the IL.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofInternational journal of molecular sciences. Basel. Vol. 8, no. 7 (July 2007), p. 593-605pt_BR
dc.rightsOpen Accessen
dc.subjectIonic liquiden
dc.subjectLíquidos iônicospt_BR
dc.subjectExtractionen
dc.subjectCompostos aromáticos : Extraçãopt_BR
dc.subjectFuelen
dc.subjectCombustíveispt_BR
dc.subjectAromaticsen
dc.subjectLigações de hidrogeniopt_BR
dc.subjectHydrogen bondsen
dc.titleOn the extraction of aromatic compounds from hydrocarbons by imidazolium ionic liquidspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000602887pt_BR
dc.type.originEstrangeiropt_BR


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