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Pt States in BaCe0.98Pt0.02O3−δ During Start Up and Shut Down Operations Under Different Conditions: Stability and Activity of Ionic Pt in Water Gas Shift Reaction

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Abstract

Stability of Pt species in doped BaCeO3 perovskites under Water gas shift reaction conditions is studied using X-ray absorption spectroscopy and in situ powder X-ray diffraction. The catalyst BaCe0.98Pt0.02O3–δ has Pt in +2 oxidation state and is found to be stable in the ionic form under reaction conditions as well as under various highly reducing shut down and start up conditions. In-situ XRD under Water Gas shift reaction conditions also reveals the Pt ions to be highly stabilized in lattice and no egress is observed.

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Acknowledgments

T. R. thanks UGC, India for funding. The authors acknowledge UGC-DAE CSR for providing XPS data on AIPES beamline, RRCAT, Indore, India.

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Authors and Affiliations

  1. Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India

    Thattarathody Rajesh & R. Nandini Devi

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  1. Thattarathody Rajesh
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  2. R. Nandini Devi
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Correspondence to R. Nandini Devi.

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Rajesh, T., Devi, R.N. Pt States in BaCe0.98Pt0.02O3−δ During Start Up and Shut Down Operations Under Different Conditions: Stability and Activity of Ionic Pt in Water Gas Shift Reaction. Catal Lett 144, 2227–2232 (2014). https://doi.org/10.1007/s10562-014-1378-2

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  • DOI: https://doi.org/10.1007/s10562-014-1378-2

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