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Article Dans Une Revue Catalysis Communications Année : 2009

Deep oxidation of methane on particles derived from YSZ-supported Pd-Pt-(O) coatings synthesized by Pulsed Filtered Cathodic Arc

D. Horwat
  • Fonction : Auteur
J. L. Endrino
  • Fonction : Auteur
J. F. Pierson
Sébastien J. Weber
A. Anders

Résumé

Methane total oxidation was studied between 250 and 800 degrees C in a specific quartz reactor for Pd, PdOy, Pd0.6Pt0.4Oy and Pd0.4Pt0.6Oy thin films deposited on yttria stabilized zirconia (YSZ) substrates. Pt containing. films exhibited poor activity and a rapid thermal decomposition. Pd and PdOy films showed good activity and transformed to particles dispersed on the YSZ substrates. The higher reaction rate of PdOy films was explained by a better dispersion of the catalyst. A drop of the reaction rate was observed when the temperature exceeded 735 degrees C and 725 degrees C for initially Pd and PdOy, respectively, which can be associated with the decomposition of PdO into Pd and O-2. The good cycling stability and catalytic efficiency of the latter films render it promising for the pollution control in methane combustion. (C) 2009 Elsevier B.V. All rights reserved.

Domaines

Catalyse

Dates et versions

hal-00431137 , version 1 (10-11-2009)

Identifiants

Citer

D. Horwat, J. L. Endrino, A. Boreave, R. Karoum, J. F. Pierson, et al.. Deep oxidation of methane on particles derived from YSZ-supported Pd-Pt-(O) coatings synthesized by Pulsed Filtered Cathodic Arc. Catalysis Communications, 2009, 10 (10), pp.1410-1413. ⟨10.1016/j.catcom.2009.03.008⟩. ⟨hal-00431137⟩
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