Anodic oxidation of hydrazine and its derivatives: Part IL the oxidation of 1,1-dimethyl-hydrazine (DMH) on gold electrodes in acid solution

Abstract

The anodic oxidation of 1,1-dimethylhydrazine has been studied in 0.5–1 N H 2SO 4. From potential-sweep measurements in the range −0.400 to +1.00 V ( vs. mercury—mercurous sulfate) three oxidation peaks were obtained. The first peak is a well-defined irreversible peak which has a corresponding reduction peak. Tafel relationships, reaction orders, and pH effects, were studied and a mechanism proposed for the first oxidation step. This involves two fast charge-transfer steps which are in quasi-equilibrium and a slow non-activated desorption step which is the rate-determining step.