OXIDATION OF 2,4,6-TRICHLOROPHENOL (TCP) CATALYZED BY IRON TETRASULFOPHTHALOCYANINE (FEPCS) SUPPORTED ON A CATIONIC ION-EXCHANGE RESIN

The oxidation of 2,4,6-trichlorophenol (TCP) with H2O2 or KHSO2 cataly zed by iron(III) tetrasulfophthalocyanine (FePcS) supported on a catio nic ion-exchange resin (Amberlite IRA 900) is reported. In order to ob tain the catalytic oxidative degradation of the aromatic ring of TCP, the supported catalyst FePcS-Amberlite should be pre-saturated with th e substrate since the phenolate form of TCP is strongly adsorbed by th e cationic resin. In these conditions, the oxidation of TCP is observe d even when the aqueous phase is deprived of acetonitrile, an organic solvent able to enhance the activity with the soluble catalyst by disp lacement of the dimer-monomer equilibrium towards momeric active speci es. The dispersion of FePcS monomers onto the support is a way to avoi d the formation of inactive dimers.