Accelerated Dual Activation of Lattice Oxygen and Molecule Oxygen over CoMn 2 O 4 Catalysts for VOC Oxidation: Promoting the Role of Oxygen Vacancies

The in-depth activation mechanism of oxygen species (including lattice oxygen and gaseous oxygen) for catalytic oxidation reactions has not been elucidated and still remains a question on the experimental level. In this work, the dual activation of lattice oxygen and molecule oxygen for highly efficient volatile organic compound oxidation was observed on spinel catalysts through the construction of oxygen vacancy engineering (urea modification). The active surface lattice oxygen species were generated via weakening the metal–oxygen bond strength, which could be easily activated to participate in the catalytic oxidation of toluene to form CO2. Simultaneously, the activation ability of gaseous molecular oxygen…

• NN
  National Natural Science Foundation of China

  Awards: 22276022, 21876019
• NK
  National Key Research and Development Program of China

  Award: 2019YFC1903903