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Science 26 May 1995:
Vol. 268. no. 5214, pp. 1163 - 1166
DOI: 10.1126/science.268.5214.1163
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Articles

Efficient Oxidative Dechlorination and Aromatic Ring Cleavage of Chlorinated Phenols Catalyzed by Iron Sulfophthalocyanine

Alexander Sorokin 1, Bernard Meunier 1, and Jean-Louis Séris 2

1 Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex, France
2 Elf-Aquitaine, GRL-Biotechnology, Lacq, 64170 Artix, France

An efficient method has been developed for the catalytic oxidation of pollutants that are not easily degraded. The products of the hydrogen peroxide (H2O2) oxidation of 2,4,6,-trichlorophenol (TCP) catalyzed by the iron complex 2,9,16,23-tetrasulfophthalocyanine (FePcS) were observed to be chloromaleic, chlorofumaric, maleic, and fumaric acids from dechlorination and aromatic cycle cleavage, as well as additional products that resulted from oxidative coupling. Quantitative analysis of the TCP oxidation reaction revealed that up to two chloride ions were released per TCP molecule. This chemical system, consisting of an environmentally safe oxidant (H2O2) and an easily accessible catalyst (FePcS), can perform several key steps in the oxidative mineralization of TCP, a paradigm of recalcitrant pollutants.

Submitted on December 8, 1994
Accepted on April 14, 1995


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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