Résumé
Hierarchical bimodal macro-mesoporous zirconia oxide has been synthesized by a simple method in the presence of CTMABr surfactant. The synthesized zirconia having uniform macropores of 300-600 nm in diameter with wormhole-like mesoporous walls and high surface area was calcined at 400 and 600 °C and impregnated with 0.5 wt.% of palladium and compared with classical 0.5 wt.% Pd/ZrO catalyst for toluene oxidation. The highest activity of 0.5 wt.%/macro-mesoporous zirconia calcined at 600 °C was mainly explained by a rather high Pd dispersion and by H-TPR measurements showing a higher quantity of PdO species easily reducible at 0 °C.
langue originale | Anglais |
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Pages (de - à) | 335-339 |
Nombre de pages | 5 |
journal | Catalysis Today |
Volume | 137 |
Numéro de publication | 2-4 |
Les DOIs | |
Etat de la publication | Publié - 30 sept. 2008 |