dc.contributor.author | Choya Atencia, Andoni | |
dc.contributor.author | De Rivas Martín, Beatriz | |
dc.contributor.author | Gutiérrez Ortiz, José Ignacio | |
dc.contributor.author | González Velasco, Juan Ramón | |
dc.contributor.author | López Fonseca, Rubén | |
dc.date.accessioned | 2019-12-09T08:45:45Z | |
dc.date.available | 2019-12-09T08:45:45Z | |
dc.date.issued | 2019-09-27 | |
dc.identifier.citation | Materials 12(19) : (2019) // Article ID 3174 | es_ES |
dc.identifier.issn | 1996-1944 | |
dc.identifier.uri | http://hdl.handle.net/10810/36745 | |
dc.description.abstract | The present work addresses the influence of the support on the catalytic behavior of Co3O4-based catalysts in the combustion of lean methane present in the exhaust gases from natural gas vehicular engines. Three different supports were selected, namely gamma-alumina, magnesia and ceria and the corresponding catalysts were loaded with a nominal cobalt content of 30 wt. %. The samples were characterized by N-2 physisorption, wavelength dispersive X-ray fluorescence (WDXRF), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction with hydrogen and methane. The performance was negatively influenced by a strong cobalt-support interaction, which in turn reduced the amount of active cobalt species as Co3O4. Hence, when alumina or magnesia supports were employed, the formation of CoAl2O4 or Co-Mg mixed oxides, respectively, with a low reducibility was evident, while ceria showed a lower affinity for deposited cobalt and this remained essentially as Co3O4. Furthermore, the observed partial insertion of Ce into the Co3O4 lattice played a beneficial role in promoting the oxygen mobility at low temperatures and consequently the catalytic activity. This catalyst also exhibited a good thermal stability while the presence of water vapor in the feedstream induced a partial inhibition, which was found to be completely reversible. | es_ES |
dc.description.sponsorship | This research was funded by the Ministry of Economy and Competitiveness (CTQ2016-80253-R AEI/FEDER, UE), Basque Government (IT1297-19) and the University of The Basque Country UPV/EHU (PIF15/335) | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/CTQ2016-80253-R | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | supported cobalt catalysts | es_ES |
dc.subject | spinel cobalt oxide | es_ES |
dc.subject | methane oxidation | es_ES |
dc.subject | magnesia | es_ES |
dc.subject | ceria | es_ES |
dc.subject | gamma-alumina | es_ES |
dc.subject | cobalt aluminate | es_ES |
dc.subject | co-mg mixed oxides | es_ES |
dc.subject | oxygen mobility: mars-van krevelen mechanism | es_ES |
dc.subject | n2o decomposition | es_ES |
dc.subject | low-temperature | es_ES |
dc.subject | oxide | es_ES |
dc.subject | combustion | es_ES |
dc.subject | co | es_ES |
dc.subject | co3o4 | es_ES |
dc.subject | performance | es_ES |
dc.subject | ch4 | es_ES |
dc.subject | formaldehyde | es_ES |
dc.title | Synthesis, Characterization and Kinetic Behavior of Supported Cobalt Catalysts for Oxidative after-Treatment of Methane Lean Mixtures | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Copyright © 2019 by the authors.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6804103/ | es_ES |
dc.identifier.doi | 10.3390/ma12193174 | |
dc.departamentoes | Ingeniería química | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa | es_ES |