Kinetics studies of the oxidation of p-hydroxy benzoic acid by sodium N-chloro-p-toluene sulphonamide (chloramine-T or CAT) have been carried out in aqueous perchloric acid medium at 35 °C. The reaction follows almost similar kinetics, being first order with respect to chloramine-T, p-hydroxy benzoic acid and Ru(III). The reaction exhibits inverse first order depedence on the concentration of medium [HClO4]. Variation of ionic strength by adding NaClO4 have no significant effect on the reaction rate. The addition of p-toluene sulphonamide, which is one of the reaction products, had no significant effect on the reaction rate. Thermodynamic parameters were computed by studying the reactions at different temperature (303-318 K). The rate laws derived are in excellent agreement with the experimental results. A mechanism consistent with the above kinetic result has been suggested.

Kinetics of oxidation of methyl glycol (MG) and diacetone alcohol (DAA) by periodate in the presence of ruthenium(III) chloride as homogeneous catalyst have been studied in acidic medium. The results indicate zero order dependence of the reaction on [IO4 -] while first order kinetics with respect to [Ru(III)] was observed. First order in both [MG] and [DAA] was observed while positive effect of [H + ] was exhibited. Variation of ionic strength of the medium and addition of potassium chloride did not bring about any significant change in the rate of the reaction. Showing thus zero effect of ionic strength and added chloride ions. A suitable mechanism consistent with kinetic results has been proposed and rate law has been deduced for the title reactions.

The kinetic data obtained in ruthenium(VI) catalysed oxidation of methyldiethylene glycol (MDG) in alkaline medium using potassium bromate as oxidant and transition metal ruthenium tetroxide as a homogenous catalyst. In this kinetic reaction, Hg(OAc)2 acts as a liberated bromide ion scavenger. The result shows first order with respect to KBrO3, methyldiethylene glycol (MDG) and transition metal respectively. It shows zero order dependences of the reaction on aqueous sodium hydroxide, which is used as medium of the reaction and also zero effect of mercuric acetate. In this catalysed reaction, ionic strength has positive effect. The corresponding acid was found to be main oxidation product. A plausible reaction mechanism in agreement with kinetic results was put forward.