BaTi0.8B0.2O3 (B = Mn, Fe, Co, Cu) LNT Catalysts: effect of partial Ti substitution on NOx storage capacity

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dc.contributor.authorAldridge, Craig
dc.contributor.authorTorregrosa Rivero, Verónica
dc.contributor.authorAlbaladejo-Fuentes, Vicente
dc.contributor.authorSánchez Adsuar, María Salvadora
dc.contributor.authorIllán Gómez, María José
dc.date.accessioned2019-06-20T13:12:51Z
dc.date.available2019-06-20T13:12:51Z
dc.date.issued2019-04-18
dc.date.updated2019-06-20T13:12:51Z
dc.description.abstractThe effect of partial Ti substitution by Mn, Fe, Co, or Cu on the NOx storage capacity (NSC) of a BaTi0.8B0.2O3 lean NOx trap (LNT) catalyst has been analyzed. The BaTi0.8B0.2O3 catalysts were prepared using the Pechini's sol-gel method for aqueous media. The characterization of the catalysts (BET, ICP-OES, XRD and XPS) reveals that: i) the partial substitution of Ti by Mn, Co, or Fe changes the perovskite structure from tetragonal to cubic, whilst Cu distorts the raw tetragonal structure and promotes the segregation of Ba2TiO4 (which is an active phase for NOx storage) as a minority phase and ii) the amount of oxygen vacancies increases after partial Ti substitution, with the BaTi0.8Cu0.2O3 catalyst featuring the largest amount. The BaTi0.8Cu0.2O3 catalyst shows the highest NSC at 400 °C, based on NOx storage cyclic tests, which is within the range of highly active noble metal-based catalysts.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec690472
dc.identifier.issn2073-4344
dc.identifier.urihttps://hdl.handle.net/2445/135664
dc.language.isoeng
dc.publisherMDPI
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.3390/catal9040365
dc.relation.ispartofCatalysts, 2019, vol. 9, num. 4, p. 365
dc.relation.urihttps://doi.org/10.3390/catal9040365
dc.rightscc-by (c) Aldridge, Craig et al., 2019
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es
dc.sourceArticles publicats en revistes (Ciència dels Materials i Química Física)
dc.subject.classificationCatàlisi
dc.subject.classificationMotors dièsel
dc.subject.classificationContaminació atmosfèrica
dc.subject.otherCatalysis
dc.subject.otherDiesel motors
dc.subject.otherAtmospheric pollution
dc.titleBaTi0.8B0.2O3 (B = Mn, Fe, Co, Cu) LNT Catalysts: effect of partial Ti substitution on NOx storage capacity
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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