Kinetics of oxidation of rosalinine hydrochloride by potassium peroxydisulphate in mixed micelles of binary surfactant system

摘要

The kinetics of oxidation of rosaniline hydrochloride (R-HCl) has been studied in binary combinations of cationiconionic and anioniconionic surfactant systems at 30 deg C. The pre-micellar environment of single C_(16)TA Br catalyses the reactions whereas single sodium dodecyl sulphate (SDS) and nonionic surfactants, viz,Triton X-100, Triton X-102, Tween-20 and Tween-80 strongly inhibit the reaction rate of R-HCl. The values of rate constant in mixed micellar solutions (C_(16)TABr + Tween-20, C_(16)TABr + Tween-80) are less than the single cationic surfactant but are higher than the single nonionic surfactant; while the value of rate constant in mixed micellar solutions (SDS + Triton X-100, SDS + Triton X - 102) is less than that in single anionic as well as in nonionic surfactant.