Characterisation and application of a novel cell for mechanistic electrochemistry at elevated temperatures

Wildgoose, GG, Lawrence, NS, Coles, BA, Jiang, L, Jones, TGJ and Compton, RG (2003) Characterisation and application of a novel cell for mechanistic electrochemistry at elevated temperatures. Physical Chemistry Chemical Physics, 5. pp. 4219-4225. ISSN 1463-9076

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Abstract

A novel high temp. cell capable of measuring electrochem. signals up to temps. of 115° is reported. Characterization of the cell was undertaken by examg. 3 differing systems. First the voltammetric response of a range of simple redox systems in both aq. and nonaq. media was recorded to deduce the activation energies for diffusion of these mols. Next the steady state linear sweep voltammetric response of N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD) in DMSO is assessed as a means of studying an inferred structural change of the solvent at elevated temps. A change in the activation energy for diffusion from 13 kJ mol-1 to 27 kJ mol-1 was obsd. as the temp. was raised. Finally, the electrochem. catalyzed reaction of the radical cation TMPD+.bul. with ascorbic acid was studied from 25° to 107°; the corresponding kinetic parameters are deduced. [on SciFinder(R)]

Item Type: Article
Uncontrolled Keywords: electrochem oxidn tetramethylphenylenediamine reaction cation radical ascorbic acid cell,voltammetry cell reaction mechanism kinetics elevated temp,activation energy diffusion electrochem cell,cell mechanistic electrochem elevated temp
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Rachel Smith
Date Deposited: 19 Jul 2011 14:01
Last Modified: 12 Nov 2018 12:31
URI: https://ueaeprints.uea.ac.uk/id/eprint/32985
DOI: 10.1039/b307900g

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