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Electrochemical oxidation of carbon black in concentrated phosphoric acid at 135°C

✍ Scribed by K. Kinoshita; J. Bett

Publisher: Elsevier Science
Year: 1973
Tongue: English
Weight: 927 KB
Volume: 11
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(73)90026-2

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✦ Synopsis

The electrochemical oxidation of a high surface area carbon black (1000 m2/g) was investigated in 96% H,PO, at 135°C. The total anodic current, the amount of CO, evolved and the oxygen content of the carbon were all measured as a function of time and potential. Two anodic processes occurred: the formation of a surface oxide and the evolution of CO,. Both decreased with time but at different rates so that CO, evolution eventually became the maior reaction. Various mechanisms to define the corrosion processes ire discussed.

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