Abstract:

A series of supported catalysts was prepared by wetness impregnation method with TiO2 as substrate. The surface structures of the catalysts were characterized by XRD and IR. The catalysts prepared were used in the oxidation of p-cresol to p-hydroxybenzaldehyde. The results show that when the molar ratio of cobalt ions and copper ions was 1∶0.5, the catalyst had the best catalytic effect. Under optimized reaction conditions, the conversion of p-cresol was nearly 100%, the selectivity of p-hydroxybenzaldehyde was 95.2%.

Key words: supported on TiO2, catalyst of Co2+ and Cu2+, catalytic oxidation, oxidation of p-cresol, p-hydroxybenzaldehyde