Title :

Impact of the Pd incorporation method on the kinetics of the CH₄/O₂ reaction on Natural-Gas-Vehicle model Pd-doped LaMnO₃ catalysts

Author(s) :

Zheng, Yuanshuang [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Decoster, Amaury [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Dhainaut, Fabien [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Heyte Dyshlovenko, Svetlana [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Marinova, Maya [Auteur]
Institut Michel Eugène Chevreul - FR 2638 [IMEC]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Granger, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Journal title :

Journal of Catalysis

Abbreviated title :

J. Catal.

Volume number :

430

Pages :

-

Publication date :

2024-03-21

ISSN :

0021-9517

English keyword(s) :

Methane combustion
NGV three-way catalyst
Palladium
Perovskite
Kinetics

HAL domain(s) :

Chimie

English abstract : [en]

The kinetics of the CH4/O2 reaction was studied in lean conditions on Natural-Gas-Vehicle Pd-doped LaMnO3 catalysts. The impact of the method for Pd incorporation, sol–gel vs. impregnation, has been examined. The calcination ...
Show more >The kinetics of the CH4/O2 reaction was studied in lean conditions on Natural-Gas-Vehicle Pd-doped LaMnO3 catalysts. The impact of the method for Pd incorporation, sol–gel vs. impregnation, has been examined. The calcination temperature to obtain the perovskite structure turned out to be a key to determine the strength of the interaction between Pd and LaMnO3. Steady-state kinetic measurements at 400 °C have been modeled according to a single site or a dual site reaction mechanism representative of the cooperation between Pd and surface lattice oxygen species supplied by the support material. Impregnated catalysts are found sensitive to particle sintering inducing a deterioration of the metal-support interface. On the contrary, aging leads to strenghening of the metal-support interaction on sol–gel Pd catalysts which promotes methane conversion notably near three-way operating conditions.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Catalyseurs de post-traitement intelligent adaptés à l'usage de carburants alternatifs
Plateforme intégREe AppLiquée au criblage haut débit de CATalyseurs pour les bioraffineries

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
• Unité Matériaux et Transformations (UMET) - UMR 8207

Submission date :

2024-05-25T21:08:36Z
2024-06-05T07:42:12Z