Rh/CexZr1−xO2 as NGV Catalyst: Impact of the Preparation of Ceria-Zirconia Support on the Catalytic Performance

Autor: Amaury Decoster, Yuanshuang Zheng, Fabien Dhainaut, Pascal Granger
Přispěvatelé: Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), ANR-11-EQPX-0037,REALCAT,Plateforme intégREe AppLiquée au criblage haut débit de CATalyseurs pour les bioraffineries(2011), Université de Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS], Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Rok vydání: 2022
Předmět:
Zdroj: Topics in Catalysis
Topics in Catalysis, 2022, Topics in Catalysis, ⟨10.1007/s11244-022-01717-z⟩
ISSN: 1572-9028
1022-5528
DOI: 10.1007/s11244-022-01717-z
Popis: International audience; Methane oxidation has been studied on Rh/CexZr1−xO2. Catalytic performances were found highly sensitive to the preparation method of CexZr1−xO2 support. Coprecipitation method leads to the highest conversion and the lowest activation barrier suggesting improved metal-support interaction. In contrast, weak resistance to thermal aging is observed. Finally aged coprecipitated Rh/CexZr1−xO2 mimics the kinetic behavior of catalysts prepared by crystal templating method. Kinetic measurements performed on this latter catalyst show that a single site reaction mechanism is more appropriate compared to dual site mechanism which agrees with the assumption that deactivation of coprecipitated samples would be related to the suppression of the metal-support interface.
Databáze: OpenAIRE
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