NOx Storage on BaTi0.8Cu0.2O3 Perovskite Catalysts: Addressing a Feasible Mechanism

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dc.contributor.authorAlbaladejo-Fuentes, Vicente
dc.contributor.authorSánchez Adsuar, María Salvadora
dc.contributor.authorAnderson, James A.
dc.contributor.authorIllán Gómez, María José
dc.date.accessioned2021-10-08T16:35:43Z
dc.date.available2021-10-08T16:35:43Z
dc.date.issued2021-08-21
dc.date.updated2021-10-08T16:35:44Z
dc.description.abstractThe NOx storage mechanism on BaTi0.8Cu0.2O3 catalyst were studied using different techniques. The results obtained by XRD, ATR, TGA and XPS under NOx storage-regeneration conditions revealed that BaO generated on the catalyst by decomposition of Ba2TiO4 plays a key role in the NOx storage process. In situ DRIFTS experiments under NO/O2 and NO/N2 show that nitrites and nitrates are formed on the perovskite during the NOx storage process. Thus, it seems that, as for model NSR catalysts, the NOx storage on BaTi0.8Cu0.2O3 catalyst takes place by both "nitrite" and "nitrate" routes, with the main pathway being highly dependent on the temperature and the time on stream: (i) at T < 350 °C, NO adsorption leads to nitrites formation on the catalyst and (ii) at T > 350 °C, the catalyst activity for NO oxidation promotes NO2 generation and the nitrate formation.
dc.format.extent18 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec713955
dc.identifier.issn2079-4991
dc.identifier.pmid34443963
dc.identifier.urihttps://hdl.handle.net/2445/180468
dc.language.isoeng
dc.publisherMDPI
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.3390/nano11082133
dc.relation.ispartofNanomaterials, 2021, vol. 11, num. 8, p. 2133
dc.relation.urihttps://doi.org/10.3390/nano11082133
dc.rightscc-by (c) Albaladejo-Fuentes, Vicente et al., 2021
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceArticles publicats en revistes (Ciència dels Materials i Química Física)
dc.subject.classificationNitrits
dc.subject.classificationNitrats
dc.subject.classificationCatàlisi
dc.subject.otherNitrites
dc.subject.otherNitrates
dc.subject.otherCatalysis
dc.titleNOx Storage on BaTi0.8Cu0.2O3 Perovskite Catalysts: Addressing a Feasible Mechanism
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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