Study on Catalytic Oxidation of Dimethylformamide by Sol-Gel Method

The CeCuOx composite catalysts for the catalytic conversion of dimethyl formamide were prepared and catalyzed by the sol-gel method with a controlled amount of Cu. The physical and chemical properties and catalytic performance of the CeCuOx composite catalysts were characterized by X-ray diffraction analysis, N2 adsorption-desorption, scanning electron microscopy, X-ray photoelectron spectroscopy, and H2-programmed step-up reduction. The results indicate that the doping of Cu increases the particle size of the CeOx support and enhances the relative content of Ce3+ species on the CeOx surface. The Cu/Ce ratio significantly influences the activity, product selectivity, and stability of the composite catalyst. Among them, Cu80Ce20 exhibits the best overall performance in the catalytic reaction of dimethylformamide.