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Rate of Oxidation of a Cobalt Catalyst in Water and Water/Hydrogen Mixtures: Influence of Platinum as a Reduction Promoter

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Abstract

The effect of a reduction promoter, platinum, on the oxidation of a cobalt catalyst was studied. An induction period was observed for the unpromoted catalyst which was absent for the Pt-promoted catalyst. The rate of oxidation was similar for both the Pt-promoted and unpromoted catalyst in the range of degrees of reduction between 50 and 10%. The rate of oxidation of the remainder of metallic cobalt was, however, faster for the platinum promoted catalyst.

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Acknowledgments

The authors gratefully acknowledge financial support for this study by Sasol.

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Authors and Affiliations

  1. Centre for Catalysis Research, Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa

    E. L. Viljoen & E. van Steen

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  1. E. L. Viljoen
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  2. E. van Steen
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Correspondence to E. L. Viljoen.

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Viljoen, E.L., van Steen, E. Rate of Oxidation of a Cobalt Catalyst in Water and Water/Hydrogen Mixtures: Influence of Platinum as a Reduction Promoter. Catal Lett 133, 8–13 (2009). https://doi.org/10.1007/s10562-009-0169-7

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  • DOI: https://doi.org/10.1007/s10562-009-0169-7

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