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dc.contributor.authorAlmeida, Karina Arruda
dc.contributor.authorHammer, Peter [UNESP]
dc.contributor.authorCardoso, Dilson
dc.date.accessioned2019-10-06T02:49:28Z
dc.date.available2019-10-06T02:49:28Z
dc.date.issued2019-07-01
dc.identifierhttp://dx.doi.org/10.1016/j.micromeso.2019.03.024
dc.identifier.citationMicroporous And Mesoporous Materials. Amsterdam: Elsevier Science Bv, v. 282, p. 159-168, 2019.
dc.identifier.issn1387-1811
dc.identifier.urihttp://hdl.handle.net/11449/186774
dc.description.abstractNaX and NaY faujasites (with Si/Al ratios of 1.3 and 2.5, respectively) were subjected to different degrees of ionic exchange with linear monoalkylammonium cations containing between 1 and 6 carbon atoms. The products were characterized using X-ray diffraction (XRD), nitrogen physisorption, X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The Knoevenagel condensation was used as a model reaction to characterize the activity and accessibility of the catalytic sites. Ionic exchange isotherms showed that only the sodium cations present in the supercavities were exchangeable for the alkylammonium ions. The XPS results showed that the monoalkylammonium cations increased the basicity of the sites of both faujasites, with the basicity increasing with the length of the carbon chain. The catalytic activity in the Knoevenagel condensation was governed by three factors: the degree of exchange, the aluminum content, and the water content of the zeolites.en
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent159-168
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMicroporous And Mesoporous Materials
dc.sourceWeb of Science
dc.subjectZeolite
dc.subjectFaujasite
dc.subjectIon exchange
dc.subjectAlkylammonium cations
dc.subjectAluminum content
dc.subjectBasic catalyst
dc.titleFaujasites exchanged with alkylammonium cations applied to basic catalysisen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniv Fed Itajuba
dc.description.affiliationUniv Fed Sao Carlos, Chem Engn Dept, Sao Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Phys Inst, Araraquara, SP, Brazil
dc.description.affiliationUniv Fed Itajuba, Itajuba, MG, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Phys Inst, Araraquara, SP, Brazil
dc.identifier.doi10.1016/j.micromeso.2019.03.024
dc.identifier.wosWOS:000471206400019
dc.rights.accessRightsAcesso aberto
dc.identifier.lattes6466841023506131
dc.identifier.orcid0000-0002-3823-0050
unesp.author.lattes6466841023506131(2)
unesp.author.orcid0000-0002-3823-0050[2]
unesp.author.orcid0000-0003-3504-4516[3]
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