Redox catalysis of Gas absorption in regions of electrode boundary layer penetration by reaction bubbles.

Reactant transport from bubbles to electrode surfaces takes place at high rates if bubble surfaces penetrate electrode boundary layers. The absorption rate can be further increased by orders of magnitude if a concentrated redox couple is used to carry charge from electrode surfaces to dissolved reactants. A diffusion layer model was used to calculate reaction-catalyzed mass transfer rates in regions of boundary layer penetration by bubbles for the case of (m,n) order irreversible homogeneous reaction followed by catalyst regeneration at the solid surface. Approximate solutions of the flux equations gave explicit relationships between surface flux and surface concentration when the reaction was first or second order with respect to the catalyst species.