dc.contributor.author | Choya Atencia, Andoni ![ORCID](/themes/Mirage2//images/orcid_16x16.png) | |
dc.contributor.author | De Rivas Martín, Beatriz | |
dc.contributor.author | Gutiérrez Ortiz, José Ignacio ![ORCID](/themes/Mirage2//images/orcid_16x16.png) | |
dc.contributor.author | López Fonseca, Rubén ![ORCID](/themes/Mirage2//images/orcid_16x16.png) | |
dc.date.accessioned | 2023-01-19T18:58:11Z | |
dc.date.available | 2023-01-19T18:58:11Z | |
dc.date.issued | 2022-12 | |
dc.identifier.citation | Journal of Environmental Chemical Engineering 10(6) : (2022) // Article ID 108816 | es_ES |
dc.identifier.issn | 2213-2929 | |
dc.identifier.issn | 2213-3437 | |
dc.identifier.uri | http://hdl.handle.net/10810/59371 | |
dc.description.abstract | In this work bimetallic Ni catalysts supported over Co-Al2O3 and monometallic Co-Al2O3 and Ni-Al2O3 catalysts were examined for the complete oxidation of methane. With a 30 % total metallic loading, the samples were synthesized by a sequential precipitation route. All samples were characterized by nitrogen physisorption, X-ray fluorescence, X-ray diffraction, Raman spectroscopy, scanning electron microscopy, scanning-transmission electron microscopy, X-Ray photoelectron spectroscopy, and temperature-programmed reduction with hydrogen and methane. Their catalytic performance was investigated in the temperature range of 200-600 degrees C with a space velocity of 60.000 h-1. The bimetallic catalysts showed a better behavior in the oxidation reaction than the monometallic counterparts, mainly due to the good dispersion of Ni on the surface of the Co-Al2O3 samples. This has enabled the insertion of Ni2+ ions into the cobalt spinel lattice, which in turn provoked an increase in the amount of Co3+ species, and a subsequent enhanced mobility of oxygen species in the spinel. In this sense, the 5Ni/25Co catalyst showed the best performance, thus reducing the value of the T50 by 25 degrees C with respect to the monometallic catalysts. | es_ES |
dc.description.sponsorship | This research was funded by the Spanish Ministry of Science and Innovation (PID2019-107105RB-I00 AEI/FEDER, UE), Basque Government (IT1509-22) and the University of The Basque Country UPV/EHU (DOCREC21/23). The authors wish to thank the technical and human support provided by SGIker (UPV/EHU). In addition, authors acknowledge the use of instrumentation as well as the technical advice provided by the National Facility ELECMI ICTS, node ‘Advanced Microscopy Laboratory’ at University of Zaragoza. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PID2019-107105RB-I00 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | lean methane oxidation | es_ES |
dc.subject | cobalt catalysts | es_ES |
dc.subject | bimetallic Ni-Co catalysts | es_ES |
dc.subject | Nickel cobaltite | es_ES |
dc.subject | vehicular natural gas | es_ES |
dc.subject | Oxygen mobility | es_ES |
dc.subject | Nickel promoter | es_ES |
dc.title | Beneficial effects of nickel promoter on the efficiency of alumina-supported Co3O4 catalysts for lean methane oxidation | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-
nc-nd/4.0/). | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S221334372201689X?via%3Dihub | es_ES |
dc.identifier.doi | 10.1016/j.jece.2022.108816 | |
dc.departamentoes | Ingeniería química | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa | es_ES |