THE KINETICS AND MECHANISM OF THE ELECTROREDUCTION OF SULFUR DIOXIDE IN NONAQUEOUS MEDIA. II. EFFECTS OF ELECTROLYTE AND SOLVENT ON THE MECHANISM OF REDUCTION

Authors
  1. Gardner, C.L.
  2. Fouchard, D.T.
  3. Fawcett, W.R.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN);Guelph Univ, Guelph ONT (CAN) Dept of Chemistry
Abstract
The effect of solvent and supporting electrolyte on the mechanism of the electroreduction of SO2 has been studied using polarography. It has been found that both the solvent and the electrolyte have a strong influence on the course of the reduction process. The reduction proceeds via the free radical intermediate S2O4 - in systems containing large cations but leads directly to S2O4 = when the system contains small cations. In addition, it has been shown that the stability of the S2O4 - decreases with increasing basicity of the solvent. These effects have been interpreted in terms of ion pairing in the system.
Report Number
849 —
Date of publication
01 Jan 1981
Number of Pages
6
Reprinted from
J of the Electrochemical Society, vol 128, no 11, 1981, p 2345-2350
DSTKIM No
82-02666
CANDIS No
37045
Format(s):
Hardcopy;Originator's fiche received by DSIS

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