ON DISTINCTION BETWEEN KINETICS OF PARALLEL AND HETEROGENEOUS CATALYTIC ELECTRODE REACTIONS

The kinetic behavior of a heterogeneous catalytic electrode reaction can be described in terms of a pseudo-parallel" reaction scheme which is analogous in form to that for simple parallel reactions. Such kinetic schemes are currently employed in studies of the complex mechanism of the oxygen electrode reaction. Criteria are developed for distinguishing between these two types of reaction mechanism with particular reference to use of a rotating ring-disk electrode system."