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Oxidation of pollutants catalyzed by supported metallophtalocyanine complexes

Objective



Research objectives and content
The range of chemical products is growing larger every year and these products make an valuable contribution to different manufacturing industries, and, in the end, to our current living-standard. However, the chemical production also leads to millions of tons of unwanted by-products and avoiding these wastes is now a key target in the current development of the 'green' chemical industry. However, if this hypothetical target of a zero-waste chemistry cannot be realized, it is at least necessary to develop efficient methods to facilitate the degradation of chemical wastes before releasing them into the environment.
Especially pesticides and chlorinated compounds are classes of compounds that are resistant to a fast degradation in nature. A bioinspired degradation of chlorinated phenols using hydrogen peroxide and an iron tetrasulfophthalocyanine catalyst was developed in the group of Prof. B. Meunier. Iron(III) tetrasulfonatophthalocyanine (FePcS) is able to catalyze the oxidation of 2,4,6-trichlorophenol (TCP) with H202 to aromatic ring cleavage products and oxidative coupling products. The FePcS/H202 catalytic system is also able to degrade the cleavage products to yield mineralized products, such as CO2 and inorganic Cl-ions. The objectives of the research
work will be:
The synthesis of a supported FePcS-catalyst and optimization of the support material For large scale applications in industry and sewage works, the development of resin-supported, easy recyclable catalysts is necessary. To minimize adsorbtion of the phenolic degradation products on the basic sites of the resin the catalyst should be covalently bound to the resin via a sulfonamide linkage.Degradation studies of the class of atrazine-pollutants that are used as herbizides The target is an elaboration of a catalyzed degradation protocol of atrazines with the FePcS/H202 catalytic system and the identification of the final products Links with industry / industrial
relevance (22)
The project is directed to industrial usability. The 'ELF-Atochem' company is involved in the planning of this project The EERO (European Environmental Research Organization, Netherlands) supported this subject.

Coordinator

Centre National de la Recherche Scientifique
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