Pluronic F127-assisted hydrothermal synthesis of Ce_xZr_1−xO_y for room temperature catalytic oxidation of formaldehyde

In this paper, the catalyst Ce_xZr_1−xO_y was prepared by the hydrothermal method for catalytic oxidation of formaldehyde at room temperature, and it was found that the FCe_xZr_1−xO_y catalyst with pluronic F127 was higher than the other two when the template agents polyethylene glycol and pluronic F127 were added. Effect of FCe_xZr_1−xO_y prepared with mesoporous materials on the properties of formaldehyde oxidation at room temperature under different molar ratios and firing temperatures, using BET, SEM, IR, XPS, XRD, and N₂ adsorption-desorption techniques. The results showed that the catalytic oxidation of formaldehyde was the best when the Ce/Zr doping amount was 5 mmol, the F127 addition was 1.5 g, and the roasting temperature was 500 ℃. The Ce/Zr doping ratio made the grain size, Ce³⁺ content and specific surface area of the catalyst significantly different, and the FCe_0.5Zr_0.5 catalyst had the highest Ce³⁺ content, with a maximum specific surface area of 111 m²/g and a pore volume of 0.124 cm³·g⁻¹, and showed the best formaldehyde conversion rate of 84.69% within six hours. After the reaction, the oxygen vacancy of the catalyst adsorbed oxygen and the specific surface area was greatly reduced, the lattice oxygen content increased, and the catalyst was inactivated.