A kinetic study of oxidation of 1,4-dioxane by diperiodatonickelate(IV) in aqueous alkaline medium

✍ Scribed by N. N. Halligudi; S. M. Desai; S. T. Nandibewoor

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 130 KB
• Volume: 31
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/(sici)1097-4601(1999)31:11<789::aid-jck5>3.0.co;2-a

✦ Synopsis

The kinetics of oxidation of 1,4-Dioxane (Dio) by Diperiodatonickelate (IV) (DPN) in aqueous alkaline medium at a constant ionic strength of 1.5 mol dm Ϫ3 was studied spectrophotometrically. The reaction shows first-order kinetics in [DPN] and less than unit order dependence each in [Dio] and [OH Ϫ ]. Addition of products, Ni(II) and periodate have no significant effect on the reaction rate. An increase in ionic strength and decrease in dielectric constant of the medium increases the rate. A mechanism based on experimental results, involving two paths, one [Dio] dependent and the other [Dio] independent is proposed. The constants involved in the mechanism are evaluated. There is a good agreement between the observed and calculated rate constants at varying conditions of experiments.