Iron microelectrodes have been used to study the dissolution kinetics in acidic perchlorate solutions, in the absence and in the presence of acetonitrile. The results compare well with previous measurements on a conventional sized rotating disc electrode. The advantages of using microelectrodes are
The anodic dissolution of iron in acidic acetonitrile-water solutions
β Scribed by Elisabet Ahlberg; Mick Friel
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 815 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0013-4686
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β¦ Synopsis
The anodic dissolution of pure iron in acetonitrile-water solutions with varying concentrations of acetonitrile and varying pH has been investigated. Potentiodynamic measurements with different sweep rates have been done. Acetonitrile was shown to act as an interface inhibitor for the dissolution of iron at low overpotential, almost entirely inhibiting the I, reaction. The alternative dissolution path, I;, which appears in the potential region of I, and involves acetonitrile adsorption was investigated. The dissolution reaction at higher overpotentials, I,, was found to be largely uninfluenced, although acetonitrile is adsorbed on the surface.
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