Methane activation at low temperature in an acidic electrolyte using PdAu/C, PdCu/C, and PdTiO2/C electrocatalysts for PEMFC

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dc.contributor.authorSOUZA, FELIPE de M.pt_BR
dc.contributor.authorSOUZA, RODRIGO F.B. dept_BR
dc.contributor.authorBATISTA, BRUNO L.pt_BR
dc.contributor.authorSANTOS, MAURO C. dospt_BR
dc.contributor.authorFONSECA, FABIO C.pt_BR
dc.contributor.authorOLIVEIRA NETO, ALMIRpt_BR
dc.contributor.authorNANDENHA, JULIOpt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2020-10-16T14:03:24Z
dc.date.available2020-10-16T14:03:24Z
dc.date.issued2020pt_BR
dc.description.abstractPd/C, PdAu/C, PdCu/C, and PdTiO2/ C electrocatalysts were prepared by a sodium borohydride reduction process for methane activation at low temperatures in a PEMFC reactor. These electrocatalysts were characterized by XRD, TEM, XPS, ICP-MS, ATR-FTIR, and cyclic voltammetry. The diffractograms of Pd/C, PdAu(50:50)/C, PdCu(50:50)/C, and PdTiO2( 50:50)/C electrocatalysts showed peaks associated with Pd face-centered cubic structure. PdAu(50:50)/C showed a small shift in the peak center when it was compared to Pd/C, while PdCu(50:50)/C showed a shift to higher angles when it was also compared to Pd/C. This effect can be due to the formation of an alloy between Pd and Au, and Pd and Cu. By TEM experiments, a mean nanoparticle size was observed between 6.9 and 8.9 nm for all electrocatalysts. Cyclic voltammograms of Pd/C, PdAu/C, PdCu/C and PdTiO2/ C electrocatalysts showed an increase in current density values after the adsorption of methane The ATR-FTIR experiments showed for all electrocatalysts the formation of methanol and formic acidic. Polarization curves at 80 °C acquired in a PEMFC reactor showed that PdAu(50:50)/C and PdTiO2( 50:50)/C had superior performance when compared to Pd/C, indicating the beneficial effect of adding the co-catalyst; this behavior has been attributed to the bifunctional mechanism or electronic effect.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipIDFAPESP: 14/09087-4; 14/50279-4; 17/11937-4; 17/21846-6; 17/22976-0; 17/11937- 4pt_BR
dc.description.sponsorshipIDCNPq: 300816/2016-2; 429727/2018-6pt_BR
dc.format.extent2481-2496pt_BR
dc.identifier.citationSOUZA, FELIPE de M.; SOUZA, RODRIGO F.B. de; BATISTA, BRUNO L.; SANTOS, MAURO C. dos; FONSECA, FABIO C.; OLIVEIRA NETO, ALMIR; NANDENHA, JULIO. Methane activation at low temperature in an acidic electrolyte using PdAu/C, PdCu/C, and PdTiO2/C electrocatalysts for PEMFC. <b>Research on Chemical Intermediates</b>, v. 46, n. 5, p. 2481-2496, 2020. DOI: <a href="https://dx.doi.org/10.1007/s11164-020-04102-1">10.1007/s11164-020-04102-1</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31446.
dc.identifier.doi10.1007/s11164-020-04102-1pt_BR
dc.identifier.fasciculo5pt_BR
dc.identifier.issn0922-6168pt_BR
dc.identifier.orcid0000-0001-8745-3421pt_BR
dc.identifier.orcid0000-0003-0708-2021pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9287-6071
dc.identifier.orcidhttps://orcid.org/0000-0003-0708-2021
dc.identifier.percentilfi48.03pt_BR
dc.identifier.percentilfiCiteScore70.00
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31446
dc.identifier.vol46pt_BR
dc.relation.ispartofResearch on Chemical Intermediatespt_BR
dc.rightsopenAccesspt_BR
dc.subjectmethane
dc.subjectelectrocatalysts
dc.subjectborohydrides
dc.subjectsodium compounds
dc.subjectbinary alloy systems
dc.subjectpalladium alloys
dc.subjectgold alloys
dc.subjectcopper alloys
dc.subjecttitanium oxides
dc.subjectproton exchange membrane fuel cells
dc.subjecttemperature range 0065-0273 k
dc.subjectfourier transformation
dc.subjectinfrared spectra
dc.subjectattenuation
dc.subjectreflection
dc.titleMethane activation at low temperature in an acidic electrolyte using PdAu/C, PdCu/C, and PdTiO2/C electrocatalysts for PEMFCpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorJULIO NANDENHA
ipen.autorALMIR OLIVEIRA NETO
ipen.autorFABIO CORAL FONSECA
ipen.autorRODRIGO FERNANDO BRAMBILLA DE SOUZA
ipen.codigoautor8211
ipen.codigoautor3541
ipen.codigoautor943
ipen.codigoautor11260
ipen.contributor.ipenauthorJULIO NANDENHA
ipen.contributor.ipenauthorALMIR OLIVEIRA NETO
ipen.contributor.ipenauthorFABIO CORAL FONSECA
ipen.contributor.ipenauthorRODRIGO FERNANDO BRAMBILLA DE SOUZA
ipen.date.recebimento20-10
ipen.identifier.fi2.914pt_BR
ipen.identifier.fiCiteScore4.4
ipen.identifier.ipendoc27220pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.identifier.ods7
ipen.range.fi1.500 - 2.999
ipen.range.percentilfi25.00 - 49.99
ipen.type.genreArtigo
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relation.isAuthorOfPublication13be55b2-f917-45c4-bc6b-5f315bd0290f
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relation.isAuthorOfPublication53d64670-0c2b-4b26-8292-00272c68a0ac
relation.isAuthorOfPublication.latestForDiscovery53d64670-0c2b-4b26-8292-00272c68a0ac
sigepi.autor.atividadeNANDENHA, JULIO:8211:610:Npt_BR
sigepi.autor.atividadeOLIVEIRA NETO, ALMIR:3541:610:Npt_BR
sigepi.autor.atividadeFONSECA, FABIO C.:943:610:Npt_BR
sigepi.autor.atividadeSOUZA, RODRIGO F.B. de:11260:610:Npt_BR
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