Functional nanostructured catalysts based on the niobates to the dry methane reforming and ethylene homologation reactions

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dc.contributor.authorMatos, Juan
dc.contributor.authorPoon, Po S.
dc.contributor.authorLanfredi, Silvania [UNESP]
dc.contributor.authorNobre, Marcos Augusto Lima [UNESP]
dc.contributor.institutionUniversidade Estadual de Londrina (UEL)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:27:28Z
dc.date.available2014-05-27T11:27:28Z
dc.date.issued2013-01-01
dc.description.abstractCatalytic activity and selectivity of niobate-based nanostructured materials were investigated. Dry methane reforming (DMR) and ethylene homologation reaction (EHR) were selected as test reactions. KSr 2Nb5O15, Sr2NaNb5O 15 and NaSr2(NiNb4)O15 δ niobate powders were prepared by the high energy ball milling method and calcined in a reductor atmosphere. N2 adsorption isotherms, X-ray diffraction and infrared spectroscopy characterization was performed. Hydrogen pretreated niobates showed from low to moderate catalytic initial activity in DMR's test, nevertheless the materials were deactivated rapidly and the kinetic parameters associated to deactivation were estimated. Otherwise, non-treated catalysts showed a high initial activity in EHR's test and KSr2Nb 5O15 catalyst requires 24 h to the total deactivation with a high selectivity to form propylene. A reaction mechanism to the propylene formation is discussed. © 2012 Elsevier Ltd. All rights reserved.en
dc.description.affiliationDepartment of Catalysis and Alternative Energies Venezuelan Institute for Scientific Research (IVIC), 20632, Caracas 1020-A
dc.description.affiliationChemistry Centre Venezuelan Institute for Scientific Research (IVIC), 20632, Caracas 1020-A
dc.description.affiliationFaculdade de Ciências e Tecnologia - FCT Univ. Estadual Paulista - UNESP, P.O. Box 467, Presidente Prudente, SP 19060-900
dc.description.affiliationUnespFaculdade de Ciências e Tecnologia - FCT Univ. Estadual Paulista - UNESP, P.O. Box 467, Presidente Prudente, SP 19060-900
dc.format.extent503-510
dc.identifierhttp://dx.doi.org/10.1016/j.fuel.2012.11.007
dc.identifier.citationFuel, v. 107, p. 503-510.
dc.identifier.doi10.1016/j.fuel.2012.11.007
dc.identifier.issn0016-2361
dc.identifier.lattes7201928600704530
dc.identifier.orcid0000-0003-4843-3975
dc.identifier.scopus2-s2.0-84878356566
dc.identifier.urihttp://hdl.handle.net/11449/74172
dc.identifier.wosWOS:000316214200053
dc.language.isoeng
dc.relation.ispartofFuel
dc.relation.ispartofjcr4.908
dc.relation.ispartofsjr1,891
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectDry methane reforming
dc.subjectEthylene homologation
dc.subjectNb-based catalysts
dc.subjectSelectivity
dc.subjectDry-methane reforming
dc.subjectHigh selectivity
dc.subjectHigh-energy ball milling
dc.subjectInitial activity
dc.subjectNano-structured catalyst
dc.subjectNiobates
dc.subjectReaction mechanism
dc.subjectTest reactions
dc.subjectBall milling
dc.subjectCalcination
dc.subjectCatalyst activity
dc.subjectCatalyst deactivation
dc.subjectEthylene
dc.subjectInfrared spectroscopy
dc.subjectNiobium compounds
dc.subjectPropylene
dc.subjectX ray diffraction
dc.subjectCatalyst selectivity
dc.titleFunctional nanostructured catalysts based on the niobates to the dry methane reforming and ethylene homologation reactionsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.lattes7201928600704530
unesp.author.orcid0000-0003-4843-3975[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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