Anodic dissolution of lead in perchloric acid solutions. Correction for changes in active surface during potential dynamic sweeps
✍ Scribed by Elisabet Ahlberg; Bo Berghult
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 656 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The anodic dissolution of lead in perchloric acid has been studied. Since the reaction is fast, the evaluation of the data becomes complicated due to changes in the active surface area. It has been shown that these changes can be divided into three different types: (1) a macroscopic structural effect; (2) a microscopic structural effect; (3) an inhibition effect. A current step technique was used to measure the double layer capacitance, which was correlated to the active surface area. Thus, the experimental data could be corrected and valuable kinetic information gained. Two models for interpretation of data are discussed: (1) a classic electrode kinetic treatment; (2) the partially blocked electrode model.