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dc.contributor.author Nores Pondal, Federico Jose
dc.contributor.author Vilella, Irene María Julieta
dc.contributor.author Troiani, Horacio Esteban
dc.contributor.author Granada, Mara
dc.contributor.author de Miguel, Sergio Ruben
dc.contributor.author Scelza, Osvaldo Antonio
dc.contributor.author Corti, Horacio Roberto
dc.date.available 2018-08-27T13:39:33Z
dc.date.issued 2009-10
dc.identifier.citation Nores Pondal, Federico Jose; Vilella, Irene María Julieta; Troiani, Horacio Esteban; Granada, Mara; de Miguel, Sergio Ruben; et al.; Catalytic activity vs. size correlation in platinum catalysts of PEM fuel cells prepared on carbon black by different methods; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 34; 19; 10-2009; 8193-8203
dc.identifier.issn 0360-3199
dc.identifier.uri http://hdl.handle.net/11336/57144
dc.description.abstract In this work nanoparticulated platinum catalysts have been prepared on carbon Vulcan XC-72 using three methods starting with chloroplatinic acid as a precursor: (i) formic acid as a reductor agent; (ii) impregnation method followed by reduction in hydrogen atmosphere at moderated temperature; and (iii) microwave-assisted reduction in ethylene glycol. The catalytic and size studies were also performed on a commercial Pt catalyst (E-Tek, De Nora). The characterization of the particle size and distribution was performed by means of transmission electron microscopy (TEM) and X-ray diffraction (XRD). The characterizations of the catalytic and electrocatalytic properties of the catalysts were determined by studying the cyclohexane dehydrogenation reaction (CHD) and the behavior under cyclic voltammetry (CV) in sulfuric acid solutions. The measured electrochemical activity, along with the hydrogen chemisorption of the catalysts allows the estimation of effective particle sizes, which are much larger than those measured by TEM and XRD. The catalysts prepared by reduction with formic acid and ethylene glycol (microwave-assisted) show electrochemical activities very close to those of the commercial catalyst, and are almost insensitive to the Pt dispersion or Pt particle size. The chemical activity in CHD correlates well with the metallic dispersion determined by hydrogen chemisorption, indicating similar accesibility of H2 and cyclohexane to the catalyst surface.
dc.format application/pdf
dc.language.iso eng
dc.publisher Pergamon-Elsevier Science Ltd
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject DISPERSION
dc.subject PEM FUEL CELL
dc.subject PT CATALYSTS
dc.subject SIZE EFFECT
dc.subject VULCAN XC-72
dc.subject.classification Otras Ingeniería Química
dc.subject.classification Ingeniería Química
dc.subject.classification INGENIERÍAS Y TECNOLOGÍAS
dc.title Catalytic activity vs. size correlation in platinum catalysts of PEM fuel cells prepared on carbon black by different methods
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-08-27T12:53:48Z
dc.journal.volume 34
dc.journal.number 19
dc.journal.pagination 8193-8203
dc.journal.pais Estados Unidos
dc.description.fil Fil: Nores Pondal, Federico Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
dc.description.fil Fil: Vilella, Irene María Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil Fil: Troiani, Horacio Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.description.fil Fil: Granada, Mara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
dc.description.fil Fil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil Fil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil Fil: Corti, Horacio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
dc.journal.title International Journal of Hydrogen Energy
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ijhydene.2009.07.073
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0360319909011872
dc.conicet.fuente unificacion


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)