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Reaction mechanism of preferential CO oxidation in excess hydrogen (PROX) on ceria supported Pt and Pd catalysts. Oxidation state and surface species as revealed by in-situ techniques

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Teschner,  Detre
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Kröhnert,  Jutta
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22137

Steinhauer,  Berndt
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Sauer,  Hermann
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21936

Paál,  Zoltán
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Jentoft,  Friederike
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Knop-Gericke,  Axel
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Teschner, D., Pozdnyakova, O., Wootsch, A., Kröhnert, J., Steinhauer, B., Sauer, H., et al. (2005). Reaction mechanism of preferential CO oxidation in excess hydrogen (PROX) on ceria supported Pt and Pd catalysts. Oxidation state and surface species as revealed by in-situ techniques. Talk presented at Seventh European Congress on Catalysis. Sofia, Bulgaria. 2005-08-28 - 2005-09-01.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-07CF-E
Abstract
The CO content of hydrogen feed to proton exchange membrane fuel cells (PEMFC) must be kept under 1-100 ppm for their proper operation. This can be achieved by using catalysts able to selectively oxidize CO in the presence of excess hydrogen (PROX). The present study reports on the mechanism of PROX reaction on Pt/CeO2 and Pd/CeO2 catalysts, by using catalytic tests, in-situ DRIFTS, high-pressure XPS, HRTEM and TDS techniques.