A Negative Effect of Niobium-Doped Ceria on Soot Oxidation Activity‡

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dc.contributor.authorPatil, S.S.
dc.contributor.authorNaik, S.
dc.contributor.authorRamesh, M.D.
dc.contributor.authorHarshini, H.
dc.contributor.authorPrasad Dasari, H.P.
dc.date.accessioned2026-02-04T12:28:12Z
dc.date.issued2022
dc.description.abstractNiobium-doped ceria catalysts were synthesized to study soot oxidation activity. X-Ray diffraction (XRD) and Raman analysis of the samples revealed the presence of a fluorite structure of CeO<inf>2</inf> for all the doped samples. The T<inf>50</inf> temperature of the pure CeO<inf>2</inf> sample was more significant than that of bare soot. The high catalytic activity of the CeO<inf>2</inf> catalyst can be attributed to the low crystallite size, high facet ratio, and the large Brunauer-Emmett-Teller (BET) surface area as compared to Nb-doped samples. The activation energy calculated by both Ozawa and KAS methods were found to be low for CeO<inf>2</inf> when compared to Nb-doped samples. CeO<inf>2</inf> resulted in better soot oxidation activity with low activation energy. © 2022 Wiley-VCH GmbH
dc.identifier.citationChemical Engineering and Technology, 2022, 45, 3, pp. 517-525
dc.identifier.issn9307516
dc.identifier.urihttps://doi.org/10.1002/ceat.202100523
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/22640
dc.publisherJohn Wiley and Sons Inc
dc.subjectActivation energy
dc.subjectCatalyst activity
dc.subjectCrystallite size
dc.subjectDust
dc.subjectFluorspar
dc.subjectNiobium
dc.subjectNiobium compounds
dc.subjectOxidation
dc.subjectSoot
dc.subjectCeria catalysts
dc.subjectDiffraction analysis
dc.subjectDoped ceria
dc.subjectDoped sample
dc.subjectEffect of niobium
dc.subjectNb doped
dc.subjectOxidation activities
dc.subjectSoot oxidation
dc.subjectSynthesised
dc.subjectX- ray diffractions
dc.subjectCerium oxide
dc.titleA Negative Effect of Niobium-Doped Ceria on Soot Oxidation Activity‡

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