Microwave-assisted catalysis by iron oxide nanoparticles on MCM-41: Effect of the support morphology

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Campo DCValorIdioma
dc.contributorLaboratorio de Nanotecnología Molecular (NANOMOL)es
dc.contributor.authorCarrillo Gómez, Adela Isabel-
dc.contributor.authorSerrano, Elena-
dc.contributor.authorLuque, Rafael-
dc.contributor.authorGarcia-Martinez, Javier-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Inorgánicaes
dc.date.accessioned2014-07-22T12:02:28Z-
dc.date.available2014-07-22T12:02:28Z-
dc.date.issued2013-02-26-
dc.identifier.citationApplied Catalysis A: General. 2013, 453: 383-390. doi:10.1016/j.apcata.2012.12.041es
dc.identifier.issn0926-860X (Print)-
dc.identifier.issn1873-3875 (Online)-
dc.identifier.urihttp://hdl.handle.net/10045/39433-
dc.description.abstractCatalytically active heterogeneous catalysts have been prepared via microwave deposition of iron oxide nanoparticles (0.5–1.2 wt%) on MCM-41 type silica materials with different morphologies (particles, helical and spheres). This methodology leads to iron oxide nanoparticles composed by a mixture of FeO and Fe2O3 species, being the Fe(II)/Fe(III) peak ratio near to 1.11 by XPS. DRUV spectroscopy indicates the presence of tetrahedral coordinated Fe3+ in the silica framework of the three catalysts as well as some extraframework iron species in the catalysts with particle and sphere-like morphologies. The loading of the nanoparticles does neither affect the mesopore arrangement nor the textural properties of the silica supports, as indicated by SAXS and nitrogen adsorption/desorption isotherms. A detailed investigation of the morphology of the supports in various microwave-assisted catalyzed processes shows that helical mesostructures provide optimum catalytic activities and improved reusabilities in the microwave-assisted redox (selective oxidation of benzyl alcohol) catalyzed process probably due to a combination of lower particle size and higher acidity in comparison with the supports with particle and sphere morphology.es
dc.description.sponsorshipJ.G.M. and R.L. gratefully acknowledge funding under project CTQ2011-28954-C02-01(02) (MICINN) from the Spanish MICINN. R.L. is also grateful for financial support via the concession of a RyC contract (RYC 2009 04199) and funding under the project P10-FQM-6711 (Consejeria de Ciencia e Innovacion, Junta de Andalucia). E.S. is grateful for financial support under the JdC program (ref. JCI 2008–2165) and from GV (ref. BEST2011/223).es
dc.languageenges
dc.publisherElsevieres
dc.subjectMicrowaveses
dc.subjectHeterogeneous catalysises
dc.subjectIron oxide nanoparticleses
dc.subjectMCM-41 type materialses
dc.subject.otherQuímica Inorgánicaes
dc.titleMicrowave-assisted catalysis by iron oxide nanoparticles on MCM-41: Effect of the support morphologyes
dc.typeinfo:eu-repo/semantics/articlees
dc.peerreviewedsies
dc.identifier.doi10.1016/j.apcata.2012.12.041-
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.apcata.2012.12.041es
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccesses
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