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Solvent-free microwave-induced oxidation of alcohols catalyzed by ferrite magnetic nanoparticles

2017-07Journal article Restricted access
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dc.contributor.authorMartins, Nuno
dc.contributor.authorMartins, Luisa
dc.contributor.authorAmorim, Carlos O.
dc.contributor.authorAmaral, Vitor
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2019-03-19T14:38:22Z
dc.date.available2019-03-19T14:38:22Z
dc.date.issued2017-07
dc.description.abstractA series of first-row-transition-metal ferrite magnetic nanoparticles (NPs) MFe2O4 [M = Mn2+ (1), Fe2+ (2), Co-2+ (3), Ni2+ (4), Cu2+ (5) or Zn2+ (6)] were prepared by the co-precipitation method and characterized by Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), scanning electron microscope -energy dispersive X-ray spectrometry (SEM-EDS), vibrating sample magnetometer (VSM) and X-ray photoelectron spectroscopy (XPS). Those NPs were used as catalysts for the microwave-assisted oxidation of various alcohols in solvent-free medium. MnFe2O4 (1), CoFe2O4 (3) and CuFe2O4 (5) act as catalysts for the conversion of alcohols to the corresponding ketones or aldehydes with a yield range of 81 to 94% in 2 h at 120 degrees C using t-BuOOH as an oxidant. These catalysts can be readily isolated by using an external magnet and no significant loss of activity is observed when reused up to 10 consecutive runs. The effects of some parameters, such as temperature, time, type of oxidant and presence of organic radicals, on the oxidation reactions were also investigated. The presented literature overview highlights the advantages of our new 1-6 NPs catalytic systems in terms of efficiency and economy, mainly due the used microwave (MW) heating mode.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMARTINS, Nuno M. R.; [et al] – Solvent-free microwave-induced oxidation of alcohols catalyzed by ferrite magnetic nanoparticles. Catalysts. ISSN 2073-4344. Vol. 7, N.º 7 (2017), pp. 1-18pt_PT
dc.identifier.doi10.3390/catal7070222pt_PT
dc.identifier.issn2073-4344
dc.identifier.urihttp://hdl.handle.net/10400.21/9740
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationPTDC/QEQ-ERQ/1648/2014 - FCTpt_PT
dc.relationPTDC/QEQ-QIN/3967/2014 - FCTpt_PT
dc.relationSFRH/BD/52371/2013 - FCTpt_PT
dc.relationPOCI-01-0145-FEDER-007679 - Project CICECO-Aveiro Institute of Materials - FCT/MECpt_PT
dc.subjectAlcohol oxidationpt_PT
dc.subjectFerrite magnetic nanoparticlespt_PT
dc.subjectMicrowave irradiationpt_PT
dc.subjectSolvent-freept_PT
dc.subjectRecyclept_PT
dc.titleSolvent-free microwave-induced oxidation of alcohols catalyzed by ferrite magnetic nanoparticlespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FCTM%2F50011%2F2013/PT
oaire.citation.endPage18pt_PT
oaire.citation.issue7pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleCatalystspt_PT
oaire.citation.volume7pt_PT
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameMartins
person.familyNameMartins
person.familyNamede Oliveira Amorim
person.familyNameAmaral
person.familyNamePombeiro
person.givenNameNuno
person.givenNameLuisa
person.givenNameCarlos
person.givenNameVitor
person.givenNameArmando
person.identifier637885
person.identifier.ciencia-idE218-E297-A4EA
person.identifier.ciencia-idD919-0978-F1B7
person.identifier.ciencia-idE319-73AD-EE01
person.identifier.ciencia-id8311-38FA-CEFB
person.identifier.orcid0000-0001-7787-6041
person.identifier.orcid0000-0002-5403-9352
person.identifier.orcid0000-0003-4148-4374
person.identifier.orcid0000-0003-3359-7133
person.identifier.orcid0000-0001-8323-888X
person.identifier.ridG-3485-2017
person.identifier.ridG-6210-2011
person.identifier.ridI-5945-2012
person.identifier.scopus-author-id57189394320
person.identifier.scopus-author-id8650947800
person.identifier.scopus-author-id7006676210
person.identifier.scopus-author-id7006067269
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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