| Autre titre | Doped barium cerate perovskite catalysts for simultaneous NOx storage and soot oxidation |
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| Téléchargement | - Voir les données supplémentaires : Doped barium cerate perovskite catalysts for simultaneous NOₓ storage and soot oxidation (PDF, 575 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1016/j.apcata.2020.117465 |
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| Auteur | Rechercher : Maffei, N.; Rechercher : Nossova, L.Identifiant ORCID : https://orcid.org/0000-0003-1809-2540; Rechercher : Turnbull, M. J.1; Rechercher : Caravaggio, G.; Rechercher : Burich, R. |
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| Affiliation | - Conseil national de recherches Canada. Énergie, les mines et l'environnement
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| Format | Texte, Article |
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| Sujet | barium cerate; NOₓ storage; soot oxidation; high-energy ball milling |
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| Résumé | A series of doped barium cerate perovskite catalysts (BaCeO₃₋δ, BaCe₀.₈Zr₀.₂O₃₋δ and BaCe₀.₈Zr0.1Co₀.₁O₃₋δ) were prepared by a two-step process consisting of solid-state synthesis followed by high-energy ball milling. X-ray diffraction studies showed that the dopants (Zr and Co) were incorporated into the perovskite lattice. TPR studies revealed that the high-energy ball milling process significantly enhanced the reducibility of the catalysts. XPS data indicated a shift in electron density away from the metal centres and an increase in defect oxides, for the high-energy ball milled catalysts, which led to enhanced activity of the catalysts. The catalytic performance was evaluated in a fixed bed reactor system under simulated diesel exhaust conditions, including water. The high-energy ball milled barium cerate sample co-doped with Zr and Co exhibited NOₓ storage of ∼228 μmol/g at 380 °C and a Tₘₐₓ, at which the rate of soot oxidation reaction was maximum, of 436 °C. |
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| Date de publication | 2020-06-25 |
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| Maison d’édition | Elsevier |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | fefa1586-cbe9-41d6-b55d-d117387af3ba |
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| Enregistrement créé | 2020-07-21 |
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| Enregistrement modifié | 2021-01-19 |
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