Construction of CuO/CeO 2 Catalysts via the Ceria Shape Effect for Selective Catalytic Oxidation of Ammonia

Tuning the interaction between the loaded metal oxide and the support material is an efficient strategy to boost catalytic purification of ammonia (NH3) as an important factor in the formation of haze. Herein, CuO/CeO2 catalysts based on the ceria shape effect (Ce-NR and Ce-NC) are prepared and tested for the selective catalytic oxidation of ammonia (NH3-SCO). The interaction between CuO and CeO2 with different shapes is crucial to regulate the interface structure and the content of oxygen vacancies. The Cu/Ce-NR possesses more Cu+-Ov-Ce3+ interfacial sites and more oxygen vacancies and achieves a higher catalytic activity (T100 = 240 °C) and a lower apparent activation energy (37.18 kJ mol–1) for NH3-SCO…

• NN
  National Natural Science Foundation of China

  Awards: 22276022, 21876019
• MO
  Ministry of Science and Technology of the People's Republic of China

  Award: 2019YFC1903903
• NS
  Natural Science Foundation of Liaoning Province

  Award: 2020-BS-056