Kinetics and Mechanism of Oxidation of n--Propanolamine by Dihydroxydiperiodatonickelate(IV) in Alkaline Medium

Authors : Jinhuan SHAN, Jing QIAN, MingZhu GAO, ShiGang SHEN, Hanwen SUN

Pages : 9-16

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The kinetics of oxidation of n--Propanolamine insert ignore into journalissuearticles values(n-PA); by dihydroxy diperiodato-nickelateinsert ignore into journalissuearticles values(IV); insert ignore into journalissuearticles values(DPN); in alkaline medium was studied with spectrophotometry in a temperature range of 293.2-308.2 K. The reaction was found to be pseudo first-order with respect to DPN and fractional order to n-PA. The rate conatant kobs, rose with an increase in the concentration of OH- and a decrease in the concentration of IO4-. Added salts did not affect the rate and no free radical was detected. From the evaluation of linear data, a reaction mechanism is proposed which involves a pre-equilibrium of an adduct formation between n-PA and dihydroxymonoperiodatonickelateinsert ignore into journalissuearticles values(IV); insert ignore into journalissuearticles values(MPN);, and the activation parameters of the rate-determining step have been calculated.
Keywords : Dihydroxydiperiodatonickelate IV, n Propanolamine, Redox reaction, Kinetics and mechanism