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The effect of CeO2 on the dynamics of Pd–PdO transformation over Pd/Al2O3 combustion catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
53098 46907 2007 4 PDF Available
Title
The effect of CeO2 on the dynamics of Pd–PdO transformation over Pd/Al2O3 combustion catalysts
Abstract

The efficiency of PdO-based catalysts for the combustion of methane is strongly influenced by the dynamics of Pd–PdO transformation. Previous investigations reported that the addition of CeO2 to the support results in a strong promotion of Pd reoxidation. In this work it is shown that the mechanism of Pd–PdO transformation in redox cycles in the presence of CeO2 is associated with a deep contact between the noble metal crystallites and CeO2: only Pd particles in contact with the promoter reoxidize at high temperature, while a different dynamics characterizes the behaviour of Pd particles not in contact with CeO2.

Keywords
Ceria; Catalytic combustion; Methane combustion; PdO; Temperature programmed oxidation
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The effect of CeO2 on the dynamics of Pd–PdO transformation over Pd/Al2O3 combustion catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 8, August 2007, Pages 1263–1266
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us