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Abstract
The kinetic and catalytic oxidation of dibutylamine(DBA), diethyl‐amine(DEA), dipropylamine(DPA), ethylamine(EA), ethylmethylamine(EMA), propylamine (PA), triethylamine(TEA), and trimethylamine(TMA) by 0.001 M potassium ferricyanide in the presence of 0.03 M NaOH at 25°C in aqueous and/or in and 0.003 M sodium dioctylsulfosuccinate (AOT) have been studied using visible spectrophotometry at 420 nm. The present data show that the reaction is first‐order with respect to [amine]T and [Fe(CN)6]3−. Also, the k obs have constant values over 0.015–0.05 M NaOH and decrease below the CMC (of AOT) and increase above the CMC. The characteristics of reaction have been studied in the presence of different salts with common cation or anion. It was observed that in aqueous solution, the k obs values increase with increasing salt concentration for both (0.005–0.06 M) common cation and (0.1–0.6 M) for common anion. But in the presence of AOT, values of k obs initially decrease up to 0.015 M for both types of salts, and then increase above 0.015 M salt. The thermodynamic parameters ΔG*, ΔH*, and ΔS* have been calculated. The pseudophase model has been applied to the system and binding constants of amine to AOT micelles have been calculated. These values correlate with the respective reactivities in aqueous AOT.