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Partial oxidation of methane using Pt/CeZrO2/Al2O3 catalyst—Effect of the thermal treatment of the support

✍ Scribed by Vanessa B. Mortola; Juan A.C. Ruiz; Lisiane V. Mattos; Fábio B. Noronha; Carla E. Hori

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
499 KB
Volume
133-135
Category
Article
ISSN
0920-5861

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✦ Synopsis

In this work, the effect of the thermal treatment temperature of the support on the behavior of Pt/CeZrO 2 /Al 2 O 3 catalysts on the methane partial oxidation was evaluated. BET surface area, metal dispersion and oxygen storage capacities and hydrogen consumption during TPR decreased with the increase of the thermal aging temperature. During the reaction of partial oxidation of methane, Pt/CeZrO 2 /Al 2 O 3 aged at 1073 and 1173 K presented the best performance. This result was attributed to the higher reducibility of the support and to the larger metal dispersion presented by these materials. These properties favor the carbon removal mechanism from the metal surface, avoiding deactivation.

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