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Anodic diffusion of oxygen through lead dioxide

โœ Scribed by B.N. Kabanov; E.S. Weisberg; I.L. Romanova; E.V. Krivolapova

Publisher
Elsevier Science
Year
1964
Tongue
English
Weight
413 KB
Volume
9
Category
Article
ISSN
0013-4686

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โœฆ Synopsis

Earlier we advanced the hypothesis that the anodic corrosion of lead in sulphuric acid solution occurs as a result of atomic oxygen penetration through the layer of lead dioxide towards the metal. To substantiate the hypothesis, it is desirable to ascertain directly the possibility of a fast enough passage of oxygen through lead dioxide. We therefore carried out anodic polarization of one side of a pure lead membrane and measured the potential on the other side. In 1-2 days in the case of 4.5 M acid and in 2-3 h in the case of 0.05 M-, the potential on the polarized side sharply increased and exceeded the equilibrium potential value of the PbO,/PbSO,, H,SO, system.

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