Anodic oxidation of formic acid on platinum—II. Interpretation of potentiostatic current/potential curves. Reaction mechanism in perchloric acid solutions

✍ Scribed by M.W. Breiter

• Publisher: Elsevier Science
• Year: 1963
• Tongue: English
• Weight: 664 KB
• Volume: 8
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(63)85003-3

✦ Synopsis

The characteristic shape of periodic potentiostatic current/potential curves in 1 N HCIO4 with different amounts of HCOOH is discussed on the basis of the previous adsorption measurements and of theoretical considerations. The experimental results can be satisfactorily interpreted by a generalized dehydration mechanism under consideration of the specific heterogeneity of the platinum surface. A concept is proposed which explains the appearance of three oxidation waves during the anodic sweep at bulk concentrations larger than 10 -a M and the appearance of only two w/ryes at concentrations smaller than 10 -8 M.