Numerical Simulation of Deactivation Process of Three-way Catalytic Converters

摘要

This paper presents the numerical simulation method to predict the deactivation process of three-way catalytic converters. Three-way catalytic converter's deactivation typically Results form thermal and chemical mechanisms. The Major factor of thermal deactivation is the sintering of Nobel metal particles, which is known to depend on the Ageing temperature and the oxygen concentration in the Exhaust gas. The chemical deactivation is mainly caused By the poisoning, which has two effects on the catalyst Deactivation.