Synthesis, characterization and catalytic properties of nanocrystaline Y2O3-coated TiO2 in the ethanol dehydration reaction

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dc.contributor.authorFajardo, Humberto Vieira
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorLeite, Edson Roberto
dc.contributor.authorLibanori, Rafael
dc.contributor.authorProbst, Luiz Fernando Dias
dc.contributor.authorCarreño, Neftalí Lenin Villarreal
dc.contributor.institutionUniversidade Federal de Ouro Preto (UFOP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Federal de Santa Catarina (UFSC)
dc.contributor.institutionUniversidade Federal de Pelotas (UFPEL)
dc.date.accessioned2014-05-20T15:17:44Z
dc.date.available2014-05-20T15:17:44Z
dc.date.issued2012-04-01
dc.description.abstractIn the present study, TiO2 nanopowder was partially coated with Y2O3 precursors generated by a sol-gel modified route. The system of nanocoated particles formed an ultra thin structure on the TiO2 surfaces. The modified nanoparticles were characterized by high resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD) analysis, Zeta potential and surface area through N2 fisisorption measurements. Bioethanol dehydration was used as a probe reaction to investigate the modifications on the nanoparticles surface. The process led to the obtainment of nanoparticles with important surface characteristics and catalytic behavior in the bioethanol dehydration reaction, with improved activity and particular selectivity in comparison to their non-coated analogs. The ethylene production was disfavored and selectivity toward acetaldehyde, hydrogen and ethane increased over modified nanoparticles.en
dc.description.affiliationUniversidade Federal de Ouro Preto Departamento de Química
dc.description.affiliationUniversidade Estadual Paulista Departamento de Físico-Química
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar) Departamento de Química
dc.description.affiliationUniversidade Federal de Santa Catarina Departamento de Química
dc.description.affiliationUniversidade Federal de Pelotas Departamento de Química Analítica e Inorgânica
dc.description.affiliationUnespUniversidade Estadual Paulista Departamento de Físico-Química
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent285-290
dc.identifierhttp://dx.doi.org/10.1590/S1516-14392012005000023
dc.identifier.citationMaterials Research. ABM, ABC, ABPol, v. 15, n. 2, p. 285-290, 2012.
dc.identifier.doi10.1590/S1516-14392012005000023
dc.identifier.fileS1516-14392012000200018.pdf
dc.identifier.issn1516-1439
dc.identifier.scieloS1516-14392012000200018
dc.identifier.urihttp://hdl.handle.net/11449/30590
dc.identifier.wosWOS:000305716000018
dc.language.isoeng
dc.publisherABM, ABC, ABPol
dc.relation.ispartofMaterials Research
dc.relation.ispartofjcr1.103
dc.relation.ispartofsjr0,398
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectcatalysisen
dc.subjectsurface modificationsen
dc.subjecttitaniaen
dc.subjectcoatingen
dc.titleSynthesis, characterization and catalytic properties of nanocrystaline Y2O3-coated TiO2 in the ethanol dehydration reactionen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/mr/paboutj.htm
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Bioquímica e Tecnologia - IQ