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 L-Valine 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, [L-Valine], [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).