Chemical and electrochemical oxidation of heterogeneous carbon anodes

✍ Scribed by R. Farr-Wharton; B.J. Welch; R.C. Hannah; R. Dorin; H.J. Gardner

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 556 KB
• Volume: 25
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(80)80046-6

✦ Synopsis

At the electrode electrolyte interface, three reactions have been found to occur during the electrochemical oxidation of carbon while electrowinning aiumirdum. The three reactions are: electrochemical evolution of carbon monoxide, which is dependent on the structure of the carbon: electrochemical evolution of carbon dioxide ; and thirdly a chemical reaction between carbon dioxide and carbon which occurs in the pore structure immediately behind the electrode interface. The first and last mentioned of these are very strongly dependent on the carbon structure real surface area and porosity of constituent carbons leading to differential reactivity in the normal heterogeneous anodes.