Liquid-phase oxidation of cyclohexanone to dibasic acids over supported cerium catalysts

摘要: Abstract Cerium catalysts supported by zeolites and kieselguhr were used in this work to catalyze the liquid—phase oxidation of cyclohexanone produce dibasic acids caprolactone with glacial acetic acid as solvent oxygen gas oxidant at 98–118° C 5–15 kg/cm 2 . The results revealed that activity cerium catalyst zeolite X (CeX) was higher than oxide far those Y kisselguhr. When content CeX larger 2.77 meq/g , conversation could be up 70% within three hours, 108° 15 fractional yield (adipic glutanic acid) about 0.8–0.9 obtained previous studies cobalt acetate, Co—type weak resin catalysts.