Kinetics and Mechanism of Oxidation of 2-(2-Methoxyethoxy)ethanol and 2-(2-Ethoxyethoxy)ethanol by Ditelluratoargentate(III) in Alkaline Medium | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

2803880

Reference Type

Journal Article

Title

Kinetics and Mechanism of Oxidation of 2-(2-Methoxyethoxy)ethanol and 2-(2-Ethoxyethoxy)ethanol by Ditelluratoargentate(III) in Alkaline Medium

Author(s)

Shan, J; Han, Jin; Li, Yi; Zhang, Z

Year

2014

Is Peer Reviewed?

Yes

Journal

Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X

Volume

Issue

Page Numbers

4347-4350

Web of Science Id

WOS:000344361100043

Abstract

Oxidation of 2-(2-methoxyethoxy)ethanol and 2-(2-ethoxyethoxy)ethanol by ditelluratoargentate(III) in alkaline liquids has been studied spectrophotometrically in the temperature range of 293.2 - 313.2 K. The first-order rates with respect to reductant and Ag(III) were all found. It was found that the pseudo-first-order rate constant kobs increased with an increase in concentration of OH -and a decrease in concentration of H4TeO62-. There was a positive salt effect and no free radicals were detected. In view of this, the Ag(H3TeO6)(H2O)(2) is assumed to be the active species. A plausible mechanism is proposed and the rate equations derived from the mechanism can explain all the experimental observations activation parameters and the rate constant of the rate-determining step were calculated.

Keywords

Ditelluratoargentate(III); 2-(2-Methoxyethoxy)ethanol; 2-(2-Ethoxyethoxy)ethanol; Redox reaction; Kinetics mechanism