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Ce–Zr mixed oxides calcined at 1000°C are more active catalysts for soot oxidation than pure CeO 2 calcined at the same temperature, both in loose and tight contact between soot and catalyst. 1000°C sinterised-CeO 2 presents a very low surface area (2m 2 /g), a large crystal size (110nm) and a lack of surface redox properties. Ce–Zr mixed oxides present higher BET surface areas...
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