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Dependency of the Oxygen Storage Capacity in Zirconia–Ceria Solid Solutions upon Textural Properties

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Abstract

The oxygen storage capacity of Ce0.2Zr0.8O2 solid solutions, prepared by different synthesis routes and aged at 1000°C, is investigated by means of temperature-programmed reduction, total- and dynamic-OSC measurements. The use of CO and H2 as reducing agent is compared under dynamic conditions. It is observed that the dynamic OSC is critically dependent on sample pre-treatment and the nature of the reducing agent in the texturally unstable sample. In contrast, on a thermally stable Ce0.2Zr0.8O2 only minor effects of the pre-treatment upon dynamic OSC are noticed.

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Authors and Affiliations

  1. Dipartimento di Scienze Chimiche, Università di Trieste, via Giorgieri 1, 34127, Trieste, Italy

    Jan Kašpar, Roberta Di Monte, Paolo Fornasiero & Mauro Graziani

  2. MEL Chemicals, PO Box 6, Clifton Junction, Swinton, Manchester, M27 8LS, UK

    Heather Bradshaw & Colin Norman

Authors
  1. Jan Kašpar
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  2. Roberta Di Monte
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  3. Paolo Fornasiero
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  4. Mauro Graziani
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  5. Heather Bradshaw
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  6. Colin Norman
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Kašpar, J., Di Monte, R., Fornasiero, P. et al. Dependency of the Oxygen Storage Capacity in Zirconia–Ceria Solid Solutions upon Textural Properties. Topics in Catalysis 16, 83–87 (2001). https://doi.org/10.1023/A:1016682831177

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