Microwave-assisted catalysis by iron oxide nanoparticles on MCM-41: Effect of the support morphology
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http://hdl.handle.net/10045/39433
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Camp Dublin Core | Valor | Idioma |
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dc.contributor | Laboratorio de Nanotecnología Molecular (NANOMOL) | es |
dc.contributor.author | Carrillo Gómez, Adela Isabel | - |
dc.contributor.author | Serrano, Elena | - |
dc.contributor.author | Luque, Rafael | - |
dc.contributor.author | Garcia-Martinez, Javier | - |
dc.contributor.other | Universidad de Alicante. Departamento de Química Inorgánica | es |
dc.date.accessioned | 2014-07-22T12:02:28Z | - |
dc.date.available | 2014-07-22T12:02:28Z | - |
dc.date.issued | 2013-02-26 | - |
dc.identifier.citation | Applied Catalysis A: General. 2013, 453: 383-390. doi:10.1016/j.apcata.2012.12.041 | es |
dc.identifier.issn | 0926-860X (Print) | - |
dc.identifier.issn | 1873-3875 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/10045/39433 | - |
dc.description.abstract | Catalytically 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.sponsorship | J.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.language | eng | es |
dc.publisher | Elsevier | es |
dc.subject | Microwaves | es |
dc.subject | Heterogeneous catalysis | es |
dc.subject | Iron oxide nanoparticles | es |
dc.subject | MCM-41 type materials | es |
dc.subject.other | Química Inorgánica | es |
dc.title | Microwave-assisted catalysis by iron oxide nanoparticles on MCM-41: Effect of the support morphology | es |
dc.type | info:eu-repo/semantics/article | es |
dc.peerreviewed | si | es |
dc.identifier.doi | 10.1016/j.apcata.2012.12.041 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.apcata.2012.12.041 | es |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | es |
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