Chlorinated VOC Oxidation

Heterogeneous catalytic oxidation of hydrocarbons has been extensively studied for the last century, since a large fraction of high value chemical feed stocks, such as organic aldehydes, acids, ketones, alcohols, etc., are produced by the catalytic partial oxidation of light alkanes and alkenes. Historically, oxidation reactions have always been carried out over either noble metals or transition metal oxides. Noble metals have been almost exclusively applied to complete oxidations, whereas transition metal oxides have been used for both selective and complete oxidations. 

The use of platinum and palladium is limited by cost and sensitivity of the noble metal catalysts to poisoning, especially by chlorine/chloride products. Thus, non-noble 

Mixed-metal oxides have also been used in order to improve the catalyst by taking advantage of the best properties of each metal. Among them, perovskite-type 

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The highly active performance of chemically AHFS-dealuminated zeolites for chlorinated VOC destruction could be accounted for by the generation of new strong acid sites, which were preferentially Bronsted sites, due to dealumination treatment. It could be concluded that a zeolite with a modest concentration of Bronsted sites, which were primarily of high acid strength, demonstrated to be effective for catalytic purposes. Likewise, it was established that chlorinated VOC oxidative decomposition was a type of reaction that required strong Bronsted acidity. 

Guillemot M, Mijoin J, Mignard S, Magnoux P. Mode of Zeolite Catalysts Deactivation Dnring Chlorinated VOCs Oxidation. A/ / / Catal A Gen 2007 327 211-217. 

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