English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/142132
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

DC FieldValueLanguage
dc.contributor.authorCalderón Gómez, Juan Carlos-
dc.contributor.authorRíos Ráfales, Miguel-
dc.contributor.authorNieto-Monge, María Jesús-
dc.contributor.authorPardo, Juan Ignacio-
dc.contributor.authorMoliner Álvarez, Rafael-
dc.contributor.authorLázaro Elorri, María Jesús-
dc.identifierdoi: 10.3390/nano6100187-
dc.identifier.citationNanomaterials 6(10): 187 (2016)-
dc.description.abstractIn this work, palladium-nickel nanoparticles supported on carbon nanofibers were synthesized, with metal contents close to 25 wt % and Pd:Ni atomic ratios near to 1:2. These catalysts were previously studied in order to determine their activity toward the oxygen reduction reaction. Before the deposition of metals, the carbon nanofibers were chemically treated in order to generate oxygen and nitrogen groups on their surface. Transmission electron microscopy analysis (TEM) images revealed particle diameters between 3 and 4 nm, overcoming the sizes observed for the nanoparticles supported on carbon black (catalyst Pd-Ni CB 1:2). From the CO oxidation at different temperatures, the activation energy E<sub>act</sub> for this reaction was determined. These values indicated a high tolerance of the catalysts toward the CO poisoning, especially in the case of the catalysts supported on the non-chemically treated carbon nanofibers. On the other hand, apparent activation energy E<sub>ap</sub> for the methanol oxidation was also determined finding—as a rate determining step—the CO<sub>ads</sub> diffusion to the OH<sub>ads</sub> for the catalysts supported on carbon nanofibers. The results here presented showed that the surface functional groups only play a role in the obtaining of lower particle sizes, which is an important factor in the obtaining of low CO oxidation activation energies.-
dc.description.sponsorshipThe authors want to thank the Spanish Ministry of Economy and Competitiveness and FEDER for financial support under the projects ENE2014-52518-C2-1-R and CTQ2011-28913-C02-01. We acknowledge support by the CSIC Open Access Publication Initiative through its Unit of Information Resources for Research (URICI).-
dc.publisherMultidisciplinary Digital Publishing Institutees_ES
dc.titleOxidation of CO and methanol on Pd-Ni catalysts supported on different chemically-treated carbon nanofibers-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)-
dc.contributor.funderEuropean Commission-
Appears in Collections:(ICB) Artículos
Files in This Item:
File Description SizeFormat 
nanomaterials-06-00187.pdf5,64 MBAdobe PDFThumbnail
Show simple item record

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.