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Effect of the ZrO2 phase on the structure and behavior of supported Cu catalysts for ethanol conversion

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dc.contributor.authorSato, A. G.
dc.contributor.authorVolanti, D. P. [UNESP]
dc.contributor.authorMeira, D. M.
dc.contributor.authorDamyanova, S.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorBueno, J. M C
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionBulgarian Academy of Sciences
dc.date.accessioned2014-05-27T11:30:08Z
dc.date.available2014-05-27T11:30:08Z
dc.date.issued2013-08-06
dc.description.abstractThe effect of amorphous (am-), monoclinic (m-), and tetragonal (t-) ZrO2 phase on the physicochemical and catalytic properties of supported Cu catalysts for ethanol conversion was studied. The electronic parameters of Cu/ZrO2 were determined by in situ XAS, and the surface properties of Cu/ZrO2 were defined by XPS and DRIFTS of CO-adsorbed. The results demonstrated that the kind of ZrO2 phase plays a key role in the determination of structure and catalytic properties of Cu/ZrO 2 catalysts predetermined by the interface at Cu/ZrO2. The electron transfer between support and Cu surface, caused by the oxygen vacancies at m-ZrO2 and am-ZrO2, is responsible for the active sites for acetaldehyde and ethyl acetate formation. The highest selectivity to ethyl acetate for Cu/m-ZrO2 catalyst up to 513 K was caused by the optimal ratio of Cu0/Cu+ species and the high density of basic sites (O2-) associated with the oxygen mobility from the bulk m-ZrO2. © 2013 Elsevier Inc. All rights reserved.en
dc.description.affiliationLaboratório de Catalise Departamento de Engenharia Química Universidade Federal de São Carlos, C.P. 676, 13565-905 São Carlos, SP
dc.description.affiliationLaboratório Interdisciplinar de Eletroquimica e Cerâmica Departamento de Físico-Química Instituto de Química Universidade Estadual Paulista, 14800-900 Araraquara, SP
dc.description.affiliationInstitute of Catalysis Bulgarian Academy of Sciences, 1113 Sofia
dc.description.affiliationUnespLaboratório Interdisciplinar de Eletroquimica e Cerâmica Departamento de Físico-Química Instituto de Química Universidade Estadual Paulista, 14800-900 Araraquara, SP
dc.format.extent1-17
dc.identifierhttp://dx.doi.org/10.1016/j.jcat.2013.06.022
dc.identifier.citationJournal of Catalysis, v. 307, p. 1-17.
dc.identifier.doi10.1016/j.jcat.2013.06.022
dc.identifier.issn0021-9517
dc.identifier.issn1090-2694
dc.identifier.lattes2354739980406725
dc.identifier.orcid0000-0001-9315-9392
dc.identifier.scopus2-s2.0-84880907007
dc.identifier.urihttp://hdl.handle.net/11449/76224
dc.identifier.wosWOS:000327903900001
dc.language.isoeng
dc.relation.ispartofJournal of Catalysis
dc.relation.ispartofjcr6.759
dc.relation.ispartofsjr2,397
dc.relation.ispartofsjr2,397
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectCharacterization
dc.subjectCu/ZrO2 catalysts
dc.subjectEthanol dehydrogenation
dc.subjectEthyl acetate
dc.subjectCatalytic properties
dc.subjectElectron transfer
dc.subjectElectronic parameters
dc.subjectEthanol conversion
dc.subjectEthyl acetates
dc.subjectOxygen mobility
dc.subjectSupported Cu
dc.subjectCatalyst selectivity
dc.subjectEthanol
dc.subjectZirconium alloys
dc.subjectCatalyst supports
dc.titleEffect of the ZrO2 phase on the structure and behavior of supported Cu catalysts for ethanol conversionen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dspace.entity.typePublication
unesp.author.lattes2354739980406725[2]
unesp.author.orcid0000-0001-9315-9392[2]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química