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Microemulsion Prepared Pt in Ceria: Catalytically Active for Water Gas Shift Reaction but Totally Inert for Methanation

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Abstract

A core–shell Pt in ceria type of catalyst prepared by a microemulsion technique shows high activity for both water gas shift and reverse water gas shift reactions but it does not catalyze methanation from carbon oxides and hydrogen feeds at all, whereas Pt-ceria catalysts prepared by traditional methods are effective for all these reactions under comparable reaction conditions. This clearly reveals the fact that the nature of active sites for shift reactions is different from those of methanation reactions, where a special metal-support interface in catalysts created by microemulsion offers the differentiation.

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Acknowledgments

We are grateful to the EPSRC and Johnson Matthey, plc of UK for supporting this work.

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  1. Connie Mei Yu Yeung

    Present address: Johnson Matthey Catalyst, Belasis Avenue, Billingham, Cleveland, TS23 1LB, UK

Authors and Affiliations

  1. Wolfson Catalysis Centre, Inorganic Chemistry Laboratory, University of Oxford, Oxford, OX1 3QR, UK

    Connie Mei Yu Yeung & Shik Chi Tsang

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  1. Connie Mei Yu Yeung
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  2. Shik Chi Tsang
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Correspondence to Shik Chi Tsang.

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Yeung, C.M.Y., Tsang, S.C. Microemulsion Prepared Pt in Ceria: Catalytically Active for Water Gas Shift Reaction but Totally Inert for Methanation. Catal Lett 128, 349–355 (2009). https://doi.org/10.1007/s10562-008-9752-6

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  • DOI: https://doi.org/10.1007/s10562-008-9752-6

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