Kinetic and Mechanism of Electron-Transfer Reactions: Silver (I) Catalyzed Oxidation of L-Ascorbic Acid by Peroxodiphosfate in Acetate Buffers

Title:Kinetic and Mechanism of Electron-Transfer Reactions: Silver (I) Catalyzed Oxidation of L-Ascorbic Acid by Peroxodiphosfate in Acetate Buffers

Volume: 3 Issue: 1

Author(s): Narendra K. Soni, Riya Sailani, Chandra L. Khandelwal and Prem D. Sharma

Affiliation:

Keywords: Catalysis, kinetics, L-ascorbic acid, mechanism, silver (I), peroxodiphosfate.

Abstract: The kinetics of silver (I) catalyzed oxidation of l-ascorbic acid (H₂A) by peroxodiphosfate (PDP) in acetate buffers has been studied. Triple distilled water was employed to eliminate suspected trace metal-ion catalysis of Cu (II) or Fe (III). The kinetics was monitored ceremetrically and the rate has been found to be independent of substrate concentration. A plausible reaction mechanism has been suggested. Results were analysed graphically in view of complex rate equation. The role of the catalyst has been via Ag^I/Ag^II redox cycle, Ag (II) confirming the presence of by the addition of 2,2’-bipyridyl where brown-orange color of Ag^I(bipy)₂ complex of transient life time was observed.

Cite this article as:

Soni K. Narendra, Sailani Riya, Khandelwal L. Chandra and Sharma D. Prem, Kinetic and Mechanism of Electron-Transfer Reactions: Silver (I) Catalyzed Oxidation of L-Ascorbic Acid by Peroxodiphosfate in Acetate Buffers, Current Catalysis 2014; 3 (1) . https://dx.doi.org/10.2174/2211544702666131121233511

DOI https://dx.doi.org/10.2174/2211544702666131121233511	Print ISSN 2211-5447
Publisher Name Bentham Science Publisher	Online ISSN 2211-5455