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A kinetic study of the permanganate oxidation of triethylamine. Catalysis by soluble colloids

✍ Scribed by Joaquin F. Perez-Benito; Conchita Arias

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
714 KB
Volume
23
Category
Article
ISSN
0538-8066

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✦ Synopsis

The kinetics of the reaction between permanganate ion and triethylamine in aqueous phosphate buffers (pH 6-8) has been studied. The reaction is autocatalytic, a soluble form of colloidal manganese dioxide temporarily stabilized in solution by adsorption of phosphate ions on its surface having been identified as the autocatalyst. The reaction is also catalyzed by gum arabic. Mechanisms in agreement with the kinetic data are proposed for the reaction pathways taking place in the bulk solution (for both triethylamine and triethylammonium ion as reductants) and on both the gum arabic and manganese dioxide colloidal particles.

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