Kinetics and Mechanism of Propane-1,3-diol Oxidation by Mn(VII) in Aqueous Medium

Abstract

The oxidation of propane-1, 3-diol by potassium permanganate in aqueous solution was investigated at λmax 525 nm. The rate of the reaction was found to increase with increase in [KMnO4] and [Propane-1, 3-diol]. The reaction showed first order dependence each in [KMnO4] and [Propane-1, 3-diol] and independent in the ionic strength of the solution. The values of ∆ # (kJ mol -1 ), ∆ # (kJK -1 mol -1 ) ∆ # (kJ mol -1 ) were 24.98, -0.22 and 90.50 respectively. Negative activation of entropy revealed an ordered transition state for the reaction. Spectroscopic studies and FTIR analysis revealed the product of the reaction to be 3-hydroxy-propanone.