Rh/CexZr1-xO2 as NGV Catalyst: Impact of the Preparation of Ceria-Zirconia Support on the Catalytic Performance - Université de Lille Accéder directement au contenu
Article Dans Une Revue Topics in Catalysis Année : 2022

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

Résumé

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.

Domaines

Catalyse
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Dates et versions

hal-04146239 , version 1 (29-06-2023)

Identifiants

Citer

Amaury Decoster, Yuanshuang Zheng, Fabien Dhainaut, Pascal Granger. Rh/CexZr1-xO2 as NGV Catalyst: Impact of the Preparation of Ceria-Zirconia Support on the Catalytic Performance. Topics in Catalysis, 2022, Topics in Catalysis, ⟨10.1007/s11244-022-01717-z⟩. ⟨hal-04146239⟩
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