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Site-selective ethanol conversion over supported copper catalysts

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dc.contributor.authorSato, Andre G.
dc.contributor.authorVolanti, Diogo P. [UNESP]
dc.contributor.authorde Freitas, Isabel C.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorBueno, Jose Maria C.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:18:25Z
dc.date.available2014-05-20T14:18:25Z
dc.date.issued2012-09-05
dc.description.abstractThe origin and influence of active sites on supported copper catalysts, and their catalytic properties for ethanol conversion, were investigated using Cu/SiO2, Cu2O/SiO2, and Cu/ZrO2. Diffuse reflectance infrared Fourier transform spectroscopy of adsorbed CO revealed that Cu1+ was more prevalent than Cu-0 species at the Cu/SiO2 surface, and that Cu-0 was the main species on Cu/ZrO2. The Cu1+/Cu-0 pair provided by Cu/SiO2 generates sites that are highly selective for the dehydrogenation of ethanol. Ethyl acetate can be formed from ethanol and acetaldehyde at ZrO2 or Cu surfaces. A combination of the Cu1+/Cu-0 pair and Cu-0 interfaced to ZrO2 is needed to efficiently transform ethanol to ethyl acetate. (C) 2012 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Engn Quim, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Fisicoquim, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Fisicoquim, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent122-126
dc.identifierhttp://dx.doi.org/10.1016/j.catcom.2012.05.008
dc.identifier.citationCatalysis Communications. Amsterdam: Elsevier B.V., v. 26, p. 122-126, 2012.
dc.identifier.doi10.1016/j.catcom.2012.05.008
dc.identifier.issn1566-7367
dc.identifier.lattes2354739980406725
dc.identifier.orcid0000-0001-9315-9392
dc.identifier.urihttp://hdl.handle.net/11449/25547
dc.identifier.wosWOS:000308285100025
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofCatalysis Communications
dc.relation.ispartofjcr3.463
dc.relation.ispartofsjr0,929
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDRIFTSen
dc.subjectXANESen
dc.subjectZirconia polymorphsen
dc.subjectHydrogenen
dc.subjectCopper catalystsen
dc.subjectEthanol chemistryen
dc.titleSite-selective ethanol conversion over supported copper catalystsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
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