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This study deals with doping of CeO2 with different cations M (M=Ti4+, Sn4+, Hf4+, Zr4+, La3+, Y3+ and Sm3+) to improve the reaction activity in two step thermochemical CO2 splitting reaction. The results show that the addition of tetravalent cations M (M=Ti4+, Sn4+, Hf4+ and Zr4+) into CeO2 significantly enhances the O2 evolution activity. The O2 production at 1400°C increases as follows: CeO2 (2...
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