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Comparison of microwave and mechanochemical energy inputs in the catalytic oxidation of cyclohexane

2018-07-07Journal article Open access
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dc.contributor.authorDa Costa Ribeiro, Ana Paula
dc.contributor.authorAlegria, Elisabete
dc.contributor.authorKopylovich, Maximilian
dc.contributor.authorFerraria, Ana Maria
dc.contributor.authorRego, Ana
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2018-07-11T13:12:16Z
dc.date.available2020-07-01T00:30:11Z
dc.date.issued2018-07-07
dc.descriptionEste trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2016 do Instituto Politécnico de Lisboa. Código de referência IPL/2016/MechSynCat_ISEL
dc.description.abstractThe effect of microwave and mechanochemical ball milling energy inputs was studied for the peroxidative oxidation (with aqueous H2O2) of cyclohexane to cyclohexanol and cyclohexanone, over CoCl2 and/or V2O5 dispersed (μm scale) catalysts. A maximum total yield of cyclohexanol and cyclohexanone of 43% after 1 h of reaction at 30 °C, in acetonitrile and under microwave irradiation (5 W), was achieved over the CoCl2–V2O5 (3 : 1) catalyst prepared by ball milling. Cyclohexanol is the main final product with a selectivity of up to 93% over cyclohexanone. Conducting the oxidation reaction under microwave irradiation under the same conditions but without any mechanochemical treatment of the catalyst prior to use resulted in a lower total yield of 30% with a lower selectivity (69%) towards cyclohexanol over cyclohexanone. The sole application of mechanochemical treatment for the catalyst preparation and the catalytic oxidation of cyclohexane allowed to reach yields of 29% after 1 h of reaction, at room temperature, without microwave irradiation and any additive and in the absence of any organic solvent. Ball milling is shown to provide a convenient, solvent-free method to disperse these solid catalysts and to promote the above cyclohexane oxidation, although, in the latter case, not so effectively as microwave irradiation.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRIBEIRO, Ana P. C.; [et al] – Comparison of microwave and mechanochemical energy inputs in the catalytic oxidation of cyclohexane. Dalton Transactions. ISSN 1477-9226. Vol. 47, N.º 25 (2018), pp. 8193-8198pt_PT
dc.identifier.doi10.1039/c8dt00866cpt_PT
dc.identifier.issn‎1477-9226
dc.identifier.issn1477-9234
dc.identifier.urihttp://hdl.handle.net/10400.21/8686
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.relationProjeto financiado no âmbito do Concurso de Projetos de Investigação, Desenvolvimento, Inovação & Criação Artística (IDI&CA) financiados pelo Instituto Politécnico de Lisboa. IPL/2016/MechSynCat_ISELpt_PT
dc.relationSmart biopolymer surfaces for Chemical Warfare Agents catalytic degradation: involved mechanisms
dc.relationMetal-mediated and H(Hal)-bond assisted syntheses of new coordination compounds
dc.relation.publisherversionhttp://pubs.rsc.org/en/content/articlepdf/2018/dt/c8dt00866c?page=searchpt_PT
dc.subjectMicrowavept_PT
dc.subjectMechanochemicalpt_PT
dc.subjectCyclohexanept_PT
dc.titleComparison of microwave and mechanochemical energy inputs in the catalytic oxidation of cyclohexanept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSmart biopolymer surfaces for Chemical Warfare Agents catalytic degradation: involved mechanisms
oaire.awardTitleMetal-mediated and H(Hal)-bond assisted syntheses of new coordination compounds
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F90883%2F2012/PT
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oaire.citation.endPage8198pt_PT
oaire.citation.issue25pt_PT
oaire.citation.startPage8193pt_PT
oaire.citation.titleDalton Transactionspt_PT
oaire.citation.volume47pt_PT
oaire.fundingStreamSFRH
oaire.fundingStreamOE
oaire.fundingStreamInvestigador FCT
oaire.fundingStream5876
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person.familyNameda Costa Ribeiro
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person.familyNameRego
person.familyNamePombeiro
person.givenNameAna Paula
person.givenNameElisabete
person.givenNameMaximilian
person.givenNameAna Maria
person.givenNameAna
person.givenNameArmando
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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