Comparison of New Microemulsion Prepared “Pt-in-Ceria” Catalyst with Conventional “Pt-on-Ceria” Catalyst for Water−Gas Shift Reaction

New “Pt-in-CeO2” catalyst prepared by microemulsion method is shown to give higher activity for a water−gas shift reaction but with no formation of CH4, the side product from hydrogenation of carbon oxides using a hydrogen-rich reformate as compared to conventional “Pt-on-CeO2” catalysts. Detailed c...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2006-05, Vol.110 (17), p.8540-8543
Main Authors: Yeung, Connie M. Y, Meunier, Frederic, Burch, Robbie, Thompsett, David, Tsang, Shik Chi
Format: Article
Language:English
Subjects:
Carbon Dioxide - chemical synthesis
Carbon Monoxide - chemistry
Catalysis
Cerium - chemistry
Emulsions - chemistry
Hydrogen - chemistry
Platinum - chemistry
Surface Properties
Temperature
Water - chemistry
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Summary:New “Pt-in-CeO2” catalyst prepared by microemulsion method is shown to give higher activity for a water−gas shift reaction but with no formation of CH4, the side product from hydrogenation of carbon oxides using a hydrogen-rich reformate as compared to conventional “Pt-on-CeO2” catalysts. Detailed characterization by DRIFT analysis and temperature programmed reduction presented in this work clearly suggest the ceria coverage on Pt inhibits the metal from forming a strong CO adsorption.
ISSN:1520-6106
1520-5207
DOI:10.1021/jp061083u