Impact of CPC micellar medium on Ru(III) promoted oxidation of L-Valine by diperiodatocuprate(III)

Abstract

The objective of the proposed investigation is to examine the influence of cationic surfactant on the Ru(III) facilitated LValine oxidation using diperiodatocuprate(III) (DPC) in an alkaline medium. The oxidation rate was ascertained by measuring the decrease in absorbance at a wavelength of 415 nm, an indicator of the Cu(III) concentration. The reaction's advancement was assessed employing the pseudo-first-order condition as a gauge for [OH–], [DPC], ionic strength, [LValine], [Ru(III)], [IO4 –], [Surfactant], and temperature. L-Valine and DPC interact stoichiometrically in a ratio of 1:4. Across the spectrum of concentrations examined, the reported reaction reflects less than unit order kinematics in relation to both [L-Valine], and [OH–], first-order reliance on the [DPC] and [Ru(III)], and negative fractional-order for [IO4 –]. A zero salt effect is suggested by the observed constancy in oxidation rate with the inclusion of electrolytes. The oxidation rate is significantly enhanced by Ru(III) solution (as a catalyst) at ppm concentration. Cetylpyridinium chloride (CPC) micellar media facilitates an additional enhancement in the rate of the desired reaction. CPC thus exhibits an excellent compatibility with Ru(III) for the L-Valine oxidation using (DPC).