Diffusion and Heterogeneous Reaction. VI. Surface Recombination in the Presence of Distributed Atom Sources

摘要

A theoretical analysis is made of the simultaneous removal of atoms by a firsthyphen;order heterogeneous reaction and their generation by a secondhyphen;order gashyphen;phase reaction. Such a model is found applicable to a system in which hydrogen atoms recombine on the walls of a cylindrical vessel in the presence of hydroxyl radicals which may interact in the gas by reaction with hydrogen molecules. The perturbation of the hydrogenhyphen;atomhyphen;concentration profile in the cylinder due to OH as measured by electron spin resonance spectroscopy is employed to calculate the rate constant for the gashyphen;phase reaction OH+H2rarr;H2O+H.