THE PROCESSING OF C6 BENZENIC FRACTION WITH MALEIC ANHYDRIDE RECEIVING
The C6 benzene fraction with a boiling point of 70 to 100 ° C and a benzene content of ~ 95%, in addition to traditional use for the isolation of pure benzene, can be used to produce maleic anhydride by the known method of vapor-phase heterogeneous-catalytic oxidation of benzene.
The process takes place at 350-400 °C, catalyzed by a mixture of vanadium and molybdenum oxides, which is usually applied to wide-porous Al2O3. As a rule, the yield of maleic anhydride is 70-75%. Since the process is supposed to be carried out without prior isolation of pure benzene, the resulting maleic anhydride will have a significantly lower cost, and it can be used both to obtain the above products from the C5 fraction, as well as a number of petroleum polymer resins (PPR) from the C9 fraction.