Investigation of reaction mechanism and kinetic modelling for the toluene total oxidation in presence of CoAlCe catalyst
Résumé
Hydrotalcite like compounds containing Co, Al and Ce are synthesized by co- precipitation method. The mixed oxides issued from calcination step, have been characterized and tested for the toluene total oxidation with various concentration of toluene and oxygen. The toluene conversion curves have been modelled in this paper with eight models. The Mars Van Krevelen mechanism shows the bestr accordance with the experimental data. Moreover, the determination of the Co3O4-CeO2 interface as the active center have been performed with the experimental observations. The Co3O4 allows obtaining high catalytic activity, and the CeO2 permits increasing the reoxidation of the Co3O4 to perfume a new catalytic cycle.
Domaines
ChimieOrigine | Fichiers produits par l'(les) auteur(s) |
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