Naphthalene oxidation in molten mixture of potassium sulfate pyrosulfate at 425°C in the presence of vanadium pentoxide gives a vapour mixture of organic products containing mainly phtalic anhydride, 1,4-naphthoquinone and unreacted naphthalene. The best rates of naphthalene conversion and anhydride phtalic formation are obtained when mixture inlet is rich in naphthalene and has a long space time.
M.S. Medimagh, M.L. Bouguerra