Mechanism of catalytic degradation of 2,4,6-trichlorophenol by a Fe-porphyrin catalyst

▶ Efficient catalytic oxidation of TCP was achieved by a Fe-porphyrin catalyst. ▶ Initial oxidation products were DCQ and Cl ions. ▶ Final oxidation products were five chlorinated dimmers produced via radical polymerization. ▶ Homogeneous [FeR4P] is more efficient vs. the heterogenized (FeR4P-SiO4) catalyst. ▶ A complete catalytic mechanism is proposed.