- Turkish Journal of Chemistry
- Vol: 26 Issue: 2
- The Kinetics and Mechanism of Oxidation of Vanillin by Diperiodatonickelate(IV) in Aqueous Alkaline ...
The Kinetics and Mechanism of Oxidation of Vanillin by Diperiodatonickelate(IV) in Aqueous Alkaline Medium
Authors : Chandrashekhar Kathari, Pandurang Pol, Sharanappa Nandibewoor
Pages : 229-236
View : 8 | Download : 4
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :The title reaction was investigated in aqueous alkaline medium. A first order dependence in diperiodatonickelate (IV) (DPN) and an apparent fractional order in both vanillin and alkali were obtained. Periodate has a retarding effect on the reaction. The effect of added products and the ionic strength of the reaction medium have no significant effect on the reaction rate. A decrease in the dielectric constant of the medium decreases the rate of reaction. Effects of temperature on the rate of reaction were studied. A mechanism based on experimental results was proposed, and constants involved in the mechanism were evaluated. A good agreement between the observed and calculated rate constants at different experimental conditions was obtained.Keywords : Oxidation, Vanillin, Kinetics, DPN