Zum Mechanismus der Anaphylatoxinbildung

Giertz, H.; Hahn, F.; Lange, A.

doi:10.1007/bf00629396

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“…The characteristic shape of current-potential curves and the results of the analysis of reaction products have been widely reported as evidence for theories of the oxidation mechanism of fuels such as CH~O, CHOOH, CH8OH, etc., in alkaline and acidic solutions (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). Potentiostatic current-potential curves show current peaks which divide, the whole oxidation range into two or more parts.…”

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confidence: 99%

“…The exact causes for the electrochemical passivity of metals, and especially that of iron, are still largely in dispute. One school of thought suggests that the responsible agent is a stoichiometric, threedimensional oxide film (1), or a sandwich type film consisting of different oxides (2). Oxide films with a defect structure, n-type at the metal-film and ptype at the film-electrolyte junction, have also been proposed (3).…”

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Electrical Double Layer Capacities of Iron During Forced Cathodic Decay of Passivity

Schmid

Hackerman

1962

J. Electrochem. Soc.

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A study of the behavior of the differential capacity of the electrical double layer of high‐purity, zone‐refined iron in 0.1NNa2SO4 , pH 2.3–6.5 has been made during forced cathodic decay of passivity using a fast single pulse technique. The capacity‐time curve shows a maximum >22 µf/cm2 (but <35 µf/cm2) at the end of the Flade plateau. This is explained on the basis of a desorption step of an as yet undefined charged particle. The capacity at O2 evolution potentials is 6–8 µf/cm2, compatible with an oxide film; at H2 evolution potentials it is 19 µf/cm2, independent of pH in both cases. The charge involved in the Flade plateau is 550–850 µcoul/cm2 with an average 680 µcoul/cm2.

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