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Ceria-based palladium zinc catalysts as promising materials for water gas shift reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
50302 46788 2014 4 PDF Available
Title
Ceria-based palladium zinc catalysts as promising materials for water gas shift reaction
Abstract

•Novel ceria-based PdZn catalysts have been tested for water gas shift reaction.•The active phase consisting of PdZn alloy is formed also under reaction conditions.•PdZn on ceria-zirconia deactivates likely due to carbon species deposition.•Palladium zinc on ceria shows good stability during start up-shut down cycles.

The production of hydrogen for fuel cell applications requires several fuel processing steps, including CO removal by means of the water gas shift (WGS) and CO preferential oxidation reactions. In this work we investigate the behavior of palladium–zinc supported on CeO2, Ce0.5Zr0.5O2 and ZrO2 as a promising alternative to low temperature WGS catalysts for fuel processing. WGS activity is optimized when the PdZn alloy is formed. Ceria-containing materials show little deactivation during startup–shutdown cycles in reformate gas and for palladium–zinc supported on pure ceria the activity can be fully recovered by an in situ reduction treatment.

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Keywords
Water gas shift; Ceria; Palladium–zinc alloy
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Ceria-based palladium zinc catalysts as promising materials for water gas shift reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 47, 5 March 2014, Pages 63–66
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