Abstract
The effects of redox-ageing on the temperature-programmed reduction and dynamic oxygen storage were investigated on two samples of Ce0.6Zr0.4O2 prepared under different synthesis conditions. It was observed that a high-temperature reduction/mild oxidation redox cycle can generate temperature-programmed reduction (TPR) profiles featuring a reduction peak at a temperature as low as 537 K. However, despite such favourable reduction behaviour, a strong deactivation of the oxygen storage is observed under dynamic conditions, indicating the limitations of the TPR method for investigation of oxygen storage.
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Hickey, N., Fornasiero, P., Di Monte, R. et al. A comparative study of oxygen storage capacity over Ce0.6Zr0.4O2 mixed oxides investigated by temperature-programmed reduction and dynamic OSC measurements. Catalysis Letters 72, 45–50 (2001). https://doi.org/10.1023/A:1009096106758
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DOI: https://doi.org/10.1023/A:1009096106758