Total Oxidation of Halogenated Organic Compounds

The halogenated volatile organic compounds have an important role in air pollution, since they are active in ozone depletion of stratosphere [50]. The oxidation of these molecules generated HCl, and in consequence the catalyst should be stable under reaction conditions, and limit the formation of hazardous volatile organic (phosgene, chlorinated dioxins, or dibenzofurans) and inorganic (metal chlorides or oxychlorides) compounds [51]. The structure of the perovskite fi amework induces such stabilization, at least compared to noble metal catalysts, and, in addition, decreases the reactivity of the produced chlorine or hydrochloric acid  

The presence of water is very important because it prevents overchlorination of the by-products. However, only water led to a damage of the perovsldte structure. The presence of oxygen limits this process and preserves the over 

Stoichiometry of oxygen, which is a condition for the stability of the perovskite structure. It is therefore very important to keep an optimal O2/H2O ratio during the reaction. 

The total oxidation of chloromethane and dichloromethane was also investigated on Ai Sr tMn03 perovskites supported on Zr02 and Zr02 containing 8 mol% Y2O3 [54]. 

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