naphthalene;  Naphthoquinone;  catalytic oxidation;  Catalyst carrier

Naphthoquinone was prepared by gas-phase catalytic oxidation of naphthalene with reamed silica gel, silica aluminum gel, activated clay, silica, etc. as carriers, and the catalyst was prepared by impregnation method. Under the same process conditions, the effects of catalyst support on the yield and selectivity of naphthoquinone and the conversion rate of naphthalene were studied. The results show that the catalyst supported by specially treated silica aluminum gel, activated clay and silica has a good catalytic effect on the catalytic oxidation of naphthalene to naphthoquinone, and the yield and selectivity of naphthoquinone are ideal.