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Copper-doped ceria catalytic activity for soot oxidation process

Diesel engines in the automotive industry have optimal fuel efficiency, high durability, and low carbon dioxide emissions but carbonaceous soot formed during the combustion process is a major health and environmental concern. Catalytic converters are introduced to address this environmental issue. Catalytic soot oxidation is a method of reducing the emission of soot particles. Soot oxidation can be accomplished with a range of different catalysts. Most catalytic converters use mixed-metal oxides combined with noble metals as catalysts, which are extremely expensive. This study's main objective is to demonstrate that an alternative catalyst involving ceria oxide doped with a transition metal, in this case , copper, could achieve admissible results, reduce carbon footprint, and be a more cost-effective and sustainable substitute. The cerium oxide powders were obtained using combustion synthesis. Various cerium oxide catalyst samples were prepared and their catalytic performance was evaluated. The materials' physicochemical properties were validated using XRD, SEM, FTIR, and DTA-TGA techniques. Cu-doped ceria nanocatalysts had smaller crystallite sizes and increased carbon oxidation activity. This study demonstrated how the use of copper doped ceria has the potential to effectively reduce harmful emissions less expensively and more sustainably.

Copper doped ceria ; catalyst ; catalytic soot oxidation ; nanocatalyst

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