Abstract
The title reaction has been studied spectrophotometrically as a function of [MnO4-], [isoleucine], [H2SO4], and temperature in absence and presence of cationic micelles of cetyltrimethylammonium bromide (CTAB). Under pseudo-first order conditions, the reaction follows first order kinetics with respect [isoleucine]. At lower values of [CTAB] (<= 40.0 x 10(-4) mol dm(-3)), the catalytic effect of cationic micelles of CTAB may be due to the incorporation/solubilization of isoleucine and MnO4- into the interfacial region of Stern-and palisade layer. In contrast, at higher values of [CTAB] (>= 40.0 x 10(-4) mol dm(-3)), the inhibitory effect was observed due to the dilution. Thermodynamic parameters were computed by studying the reactions at different temperatures (303-333 K). Plausible mechanisms are suggested.