Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles

This work deals with the extensive study of supported bimetallic Co-Ni catalysts for the complete oxidation of methane. The simultaneous incorporation of nickel and cobalt was found to enhance the redox properties by favouring the formation of nickel cobaltite-like species and partially inhibiting t...

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Autores: Choya Atencia, Andoni, De Rivas Martín, Beatriz, González Velasco, Juan Ramón, Gutiérrez Ortiz, José Ignacio, López Fonseca, Rubén
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/63841
Acceso en línea:http://hdl.handle.net/10810/63841
Access Level:acceso abierto
Palabra clave:methane oxidation
cobalt spinel
nickel cobaltite
lattice oxygen
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spelling Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehiclesChoya Atencia, AndoniDe Rivas Martín, BeatrizGonzález Velasco, Juan RamónGutiérrez Ortiz, José IgnacioLópez Fonseca, Rubénmethane oxidationcobalt spinelnickel cobaltitelattice oxygenThis work deals with the extensive study of supported bimetallic Co-Ni catalysts for the complete oxidation of methane. The simultaneous incorporation of nickel and cobalt was found to enhance the redox properties by favouring the formation of nickel cobaltite-like species and partially inhibiting the interaction between Co3O4 and alumina. In turn, this resulted in an increase of the amount of Co3+ cations in the catalysts, which led to a more notable presence of active lattice oxygen species in the samples. When the nickel loading was increased, the generation of less active NiO was observed. The improvement of the redox properties resulted in a promotion of the specific reaction rate and a shift of around 50 ◦C in the T50 value over the bimetallic catalysts. The most active catalyst (25Co-5Ni) was found to be relatively stable during prolonged operation times, but suffered an appreciable and irreversible deactivation in the presence of water vapour.Ministry of Economy and Competitiveness (CTQ2016-80253-R AEI/FEDER, UE) // Basque Government (IT1297-19) // University of The Basque Country UPV/EHU (PIF15/335).Elsevier202420242020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/63841reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/CTQ2016-80253-R/https://doi.org/10.1016/j.apcatb.2020.119712info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseoai:addi.ehu.eus:10810/638412026-06-18T09:23:17Z
dc.title.none.fl_str_mv Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
title Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
spellingShingle Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
Choya Atencia, Andoni
methane oxidation
cobalt spinel
nickel cobaltite
lattice oxygen
title_short Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
title_full Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
title_fullStr Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
title_full_unstemmed Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
title_sort Optimisation of bimetallic Co-Ni supported catalysts for oxidation of methane in natural gas vehicles
dc.creator.none.fl_str_mv Choya Atencia, Andoni
De Rivas Martín, Beatriz
González Velasco, Juan Ramón
Gutiérrez Ortiz, José Ignacio
López Fonseca, Rubén
author Choya Atencia, Andoni
author_facet Choya Atencia, Andoni
De Rivas Martín, Beatriz
González Velasco, Juan Ramón
Gutiérrez Ortiz, José Ignacio
López Fonseca, Rubén
author_role author
author2 De Rivas Martín, Beatriz
González Velasco, Juan Ramón
Gutiérrez Ortiz, José Ignacio
López Fonseca, Rubén
author2_role author
author
author
author
dc.subject.none.fl_str_mv methane oxidation
cobalt spinel
nickel cobaltite
lattice oxygen
topic methane oxidation
cobalt spinel
nickel cobaltite
lattice oxygen
description This work deals with the extensive study of supported bimetallic Co-Ni catalysts for the complete oxidation of methane. The simultaneous incorporation of nickel and cobalt was found to enhance the redox properties by favouring the formation of nickel cobaltite-like species and partially inhibiting the interaction between Co3O4 and alumina. In turn, this resulted in an increase of the amount of Co3+ cations in the catalysts, which led to a more notable presence of active lattice oxygen species in the samples. When the nickel loading was increased, the generation of less active NiO was observed. The improvement of the redox properties resulted in a promotion of the specific reaction rate and a shift of around 50 ◦C in the T50 value over the bimetallic catalysts. The most active catalyst (25Co-5Ni) was found to be relatively stable during prolonged operation times, but suffered an appreciable and irreversible deactivation in the presence of water vapour.
publishDate 2020
dc.date.none.fl_str_mv 2020
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/63841
url http://hdl.handle.net/10810/63841
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/CTQ2016-80253-R/
https://doi.org/10.1016/j.apcatb.2020.119712
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
This manuscript version is made available under the CC-BY-NC-ND 4.0 license
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/3.0/es/
This manuscript version is made available under the CC-BY-NC-ND 4.0 license
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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