Devadoss, V. and Noel, M. and Jayaraman, K. and Basha, C.A. (2003) Electrochemical behaviour of Mn3+/Mn2+, Co3+/Co2+ and Ce4+/Ce4+ redox mediators in methanesulfonic acid. Journal of Applied Electrochemistry, 33. pp. 319-323. ISSN 0021-891X

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Abstract

The redox behaviour of Mn3þ/Mn2þ, Co3þ/Co2þ and Ce4þ/Ce3þ mediators commonly used in indirect oxidation of organic compounds were evaluated in methane sulfonic acid on a glassy carbon working electrode employing cyclic voltammetry. Manganic methanesulfonate exhibits higher instability in dilute methanesulfonic acid. The solid MnO2 formed during disproportionation on the glassy carbon electrode further affects the reproducibility. Cobaltic methanesulfonate formation occurs only at oxygen evolution region rendering the overall oxidation process less efficient. Ceric methane sulfonate formation is highly efficient over a wide acid concentration range. Ceric methanesulfonate can also be employed over a wide temperature range to oxidize different aromatic compounds.

Item Type:	Article
Uncontrolled Keywords:	cerous/ceric; cobaltous/cobaltic; cyclic voltammetry; manganous/manganic; methane sulfonic acid
Subjects:	Electroorganic Pollution Control
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	21 Feb 2012 05:56
Last Modified:	21 Feb 2012 05:56
URI:	http://cecri.csircentral.net/id/eprint/875

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