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    STUDIA CHEMIA - Issue no. 1 / 2003  
         
  Article:   KINETICS AND MECHANISM OF O-XYLENE OXIDATION BY CE(IV) IN AQUEOUS ACIDIC MEDIUM.

Authors:  GABRIELA-CRISTINA BUCÅžA, CLAUDIA GEMMA MUREŞANU, IOAN BÂLDEA.
 
       
         
  Abstract:  The oxidation of o–xylene in aqueous acidic media, using perchloric acid, has been followed spectrophotometrically. A first-order dependence on Ce(IV) concentration and a complex dependence on o-xylene and hydrogen ion concentrations have been established. The effect of ionic strength on the reaction rate has been studied and activation parameters were calculated. The global reaction rate is consistent with a mechanism involving the rapid formation of a complex, suffering an intramolecular electron transfer.  
         
     
         
         
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