Kinetic Study of the Oxidation of Ascorbic Acid Catalysed by the Coppercii) Complex of Quinoxaline-2-carboxalidene-2-aminophenol
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چکیده
The kinetics and mechanism of metal ion catalysis in the oxidation of ascorbic acid have been the subject matter of several studies. The catalytic oxidation of ascorbic acid in the presence of Cu(II) and Fe(I'.|I) ions and their complexes in aqueous medium have been reportedl-6. As has been mentioned in the previous chapter, among the various metal complexes synthesised, only the Cu(]I) complexes were found to be good catalysts towards oxidation of ascorbic acid. It was therefore found interesting to undertand the mechanism of oxidation of ascorbic acid in the presence of these copper complexes. For this purpose, the ICu(QAP)2] complex has been chosen as the catalyst and a detailed kinetic study of the oxidation of ascorbic acid in methanol-water mixtures was carried out. The results of these studies are presented in this chapter.
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