FIELD: organic synthesis. SUBSTANCE: dihydroxybenzenes are produced via catalytic oxidation of phenol by nitrogen monoxide in presence of benzene, catalysts being zeolites ZSM-5 and ZSM-11 with alumina, silica, or their mixture as binding agent. Catalyst is preliminarily activated by steam at 500-1000 C. Process is conducted in flow reactor at 250 to 600 C and contact time between 0.1 and 10 sec. Advantageously inert gas is used as gaseous diluent. EFFECT: increased stability and selectivity of catalyst. 8 cl, 3 tbl, 15 ex
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