Electrosynthesis of methanol from methane: The role of V2O5 in the reaction selectivity for methanol of a TiO2/RuO2/V2O5 gas diffusion electrode

dc.creatorRocha, RS
dc.creatorReis, RM
dc.creatorLanza, MRV
dc.creatorBertazzoli, R
dc.date2013
dc.date36892
dc.date2014-07-30T17:19:19Z
dc.date2015-11-26T16:51:06Z
dc.date2014-07-30T17:19:19Z
dc.date2015-11-26T16:51:06Z
dc.date.accessioned2018-03-28T23:37:53Z
dc.date.available2018-03-28T23:37:53Z
dc.identifierElectrochimica Acta. Pergamon-elsevier Science Ltd, v. 87, n. 606, n. 610, 2013.
dc.identifier0013-4686
dc.identifierWOS:000315171100076
dc.identifier10.1016/j.electacta.2012.09.113
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/64642
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/64642
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1275899
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionMethane fed TiO2/RuO2/PTFE gas diffusion electrodes (GDEs) have been used for the electrosynthesis of methanol in 0.1 mol L-1 of Na2SO4 supporting electrolyte. By-products such as formaldehyde and formic acid are usually also formed during electrolyses, with the latter formed at a similar rate as that of methanol. In this study, V2O5 was added to the composition of the GDE to improve its selectivity for methanol. TiO2/RuO2/V2O5 powder hot-pressed with PTFE resulted in a GDE suitable for oxidative electrosynthesis with simultaneous oxygen evolution. By feeding the TiO2/RuO2/V2O5/PTFE GDE with methane, it was possible to enhance its selectivity for methanol at low values of current density. Furthermore, the formation of formic acid and formaldehyde was suppressed, allowing for higher current efficiencies. The addition of 5.6% of V2O5 increased the electrode's current efficiency to 57% at 2.0 V, which is 2-fold higher than the efficiency achieved in the absence of vanadium oxide. (C) 2012 Elsevier Ltd. All rights reserved.
dc.description87
dc.description606
dc.description610
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationElectrochimica Acta
dc.relationElectrochim. Acta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectElectrosynthesis
dc.subjectMethane
dc.subjectMethanol synthesis
dc.subjectGas diffusion electrodes
dc.subjectThermally prepared oxide electrodes
dc.subjectElectrochemical Properties
dc.subjectOxide Electrodes
dc.subjectOxidation
dc.titleElectrosynthesis of methanol from methane: The role of V2O5 in the reaction selectivity for methanol of a TiO2/RuO2/V2O5 gas diffusion electrode
dc.typeArtículos de revistas


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