Catalysis of dioxygen reduction at graphite electrodes by an adsorbed cobalt(ii) porphyrin

O2 electrocatalysis in acid media on iron naphthalocyanine impregnations

“…This is attributed by Durand and Anson [16] to a rate determining chemical reaction between dioxygen and the catalyst. According to ref.…”

The cathodic reduction of oxygen at metal tetrasulfonato-phthalocyanines: influence of adsorption conditions on electrocatalysis

“…9B, the extrapolated line for the smallest coverage (curve 3) does not go through the origin, indicating the occurrence of "kinetic limitation". This has been attributed, by Durand and Anson [21], to a rate-determining chemical reaction between oxygen and the catalyst. In their experiments, they used cobalt porphyrin as a catalyst.…”

Oxygen reduction in acid media: effect of iron substitution by cobalt on heat-treated naphthalocyanine impregnations supported on preselected carbon blacks

“…The total number N of exchanged electrons is found from the slope to be 3.5. In addition, it has been shown [18] that curves of this shape are characteristic of a reaction mechanism involving a limiting adsorption step.…”