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Pr-rich cerium-zirconium-praseodymium mixed oxides for automotive exhaust emission control

hal.structure.identifierInstitut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
hal.structure.identifierLaboratoire catalyse et spectrochimie [LCS]
dc.contributor.authorFAHED, Simon
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorPOINTECOUTEAU, Rémy
hal.structure.identifierInstitut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
dc.contributor.authorAOUINE, Mimoun
hal.structure.identifierInstitut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
dc.contributor.authorBOREAVE, Antoinette
hal.structure.identifierInstitut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
dc.contributor.authorGIL, Sonia
hal.structure.identifierInstitut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
dc.contributor.authorMEILLE, Valérie
hal.structure.identifierLaboratoire catalyse et spectrochimie [LCS]
dc.contributor.authorBAZIN, Philippe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorTOULEMONDE, Olivier
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDEMOURGUES, Alain
hal.structure.identifierLaboratoire catalyse et spectrochimie [LCS]
dc.contributor.authorDATURI, Marco
hal.structure.identifierIRCELYON-Catalytic and Atmospheric Reactivity for the Environment [CARE]
dc.contributor.authorVERNOUX, P.
dc.date.issued2022
dc.identifier.issn0926-860X
dc.description.abstractEnThis study describes the textural, structural, redox properties, oxygen reactivity of two Pr-rich cerium-zirconium-praseodymium (CZP) oxides (Ce 0.45 Zr 0.10 Pr 0.45 O 2-x and Ce 0.475 Zr 0.05 Pr 0.475 O 2-x) and their catalytic activity for propane and CO oxidation in both stoichiometric and lean conditions, two important reactions for automotive exhaust emission control. The concentration of oxygen vacancies can be tuned by the quantity of Pr 3+ cations which depend both on the preparation method and the composition. The Pr 4+ (4f 1)/Pr 3+ (4f 2) ratio was accurately determined by magnetic measurement. A highly energetic grinding step was found to double this Pr 3+ concentration, resulting in a strong enhancement of the lowtemperature reducibility, bulk oxygen mobility and catalytic activity for propane deep oxidation. Pr-rich CZP oxides seem to be less relevant for CO oxidation, which is mainly driven by the specific surface areas. These Pr-rich CZP mixed oxides present better performances for lean conditions, suggesting their possible role in diesel oxidation catalysts applications.
dc.description.sponsorshipNouveaux composés pour le stockage de l'oxygène, l'oxydation et la réduction en dépollution automobile - ANR-17-CE08-0022
dc.language.isoen
dc.publisherElsevier
dc.subject.enmixed metal oxides
dc.subject.enemission abatement
dc.subject.enautomotive exhaust control
dc.subject.enTWC
dc.subject.enoxidation catalysts
dc.title.enPr-rich cerium-zirconium-praseodymium mixed oxides for automotive exhaust emission control
dc.typeArticle de revue
dc.identifier.doi10.1016/j.apcata.2022.118800
dc.subject.halChimie/Catalyse
bordeaux.journalApplied Catalysis A : General
bordeaux.page118800 (11 p.)
bordeaux.volume644
bordeaux.peerReviewedoui
hal.identifierhal-03759999
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03759999v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Applied%20Catalysis%20A%20:%20General&rft.date=2022&rft.volume=644&rft.spage=118800%20(11%20p.)&rft.epage=118800%20(11%20p.)&rft.eissn=0926-860X&rft.issn=0926-860X&rft.au=FAHED,%20Simon&POINTECOUTEAU,%20R%C3%A9my&AOUINE,%20Mimoun&BOREAVE,%20Antoinette&GIL,%20Sonia&rft.genre=article


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