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The kinetics of oxidation of n -butylamine and 1,3-propanediamine by home-made potassium ferrate(VI) at different conditions has been studied spectrophotometrically in the temperature range of 283.2-298.2 K. The results show first order dependence on potassium ferrate (VI) and on each reductant. The observed rate constant ( k obs ) decreases with the increase of [OH - ], and the reaction rate has a negative fraction order with respect to [OH - ]. A plausible mechanism is proposed and the rate equations derived from the mechanism was shown to fit all the experimental results. The rate constants of the rate-determining step and the thermodynamic activation parameters are calculated.

Kinetics and mechanism of oxidation of n-butylamine and 1,3-propanediamine by potassium ferrate