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Kinetics of Ce(IV) oxidation of α-keto acids in sulfuric-perchloric acid media

✍ Scribed by A. Sezai Saraç

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
476 KB
Volume
17
Category
Article
ISSN
0538-8066

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✦ Synopsis

The rates of oxidation of four a-keto acids, glyoxylic, pyruvic, phenylglyoxylic, and 2oxobutyric acids by Cerium(1V) in H2S04-HaHS04 and HzS04-HC104 solutions, have been studied spectrophotometrically. The rate data suggest that CeSO:' is the most reactive of the Cerium(1V)-sulfate complexes present in the H2S04-NaHS04 and HzS04-HC104 systems. The oxidation reaction is proposed to be a one-electron process with the rate-determining step being the decomposition of a a-ketoacid-Cerium(1V) complex to a free radical and carbon dioxide through a transition state.

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