Hydroxylation of phenol with hydrogen peroxide over tungstovanadophosphates with Dawson structure

Tungstovanadophosphates with Dawson structure (Cpyr)6+nP2W18−nVnO62 (n = 1–3, Cpyr = Cetylpyridinium) were synthesized and characterized by IR and NMR. The hydroxylation of phenol with 30% aq. hydrogen peroxide was carried out using the catalysts. The results indicate that vanadium is the active substance in the reaction.