The Kinetics of the Interaction of Atomic Hydrogen with Olefines. II. Diffusion Theory

In this paper, a system is described in which diffusion of a hydrogen atom takes place effectively in one dimension. The exact differential diffusion equations can be set up and solved, taking into account the possibility of gas-phase removal of the hydrogen atom by a reaction such as H + C2H4 = C2H5. The collision efficiency of such a reaction has been related to the fraction of hydrogen atoms which reach the oxide layer under certain well-defined conditions. The calculated distribution curves of hydrogen atom concentration throughout the reaction vessel are also given under various conditions.