Elaboration of an accelerated oven CNG heavy duty vehicles catalyst ageing for road ageing simulation

Abstract

The study of automotive catalyst deactivation is associated with technical, economical and environmental problems. The deactivation phenomenon can be divided into three main groups: thermal, chemical and mechanical. Both fresh and road aged commercial metallic honeycombs were used to determine an ageing impact on catalytic activity. Accelerated catalyst ageing procedures were performed to simulate thermal ageing process observed during the real conditions (30,000 km of mileage). Different water quantities and times ageing were used to simulate accelerated ageing process. SEM, DRX, N2 adsorption and TPR analyses were carried out to explain catalyst deactivation. © 2013 Springer Science+Business Media New York.