Abstract:
Carbon monoxide (CO) and hydrocarbons (HCs) are two of the major pollutants from vehicles
affecting air quality in general and urban air quality in particular. Catalytic converter transforms
these pollutants into less harmful products and are one the most widely used means of vehicular
emission control. This study investigates the effect of loading and particle size of the cobalt
oxide catalyst supported on titania using stainless steel wire mesh as substrate for the oxidation
of HCs and CO from a real engine exhaust. Five different loadings of titania supported cobalt
catalyst ranging from 6-21 wt. % have been prepared by the wet impregnation method. The
catalysts have been characterized by using X-Ray Diffraction (XRD), Scanning Electron
Microscope (SEM) and (BET) surface area analyzer. By increasing the loading of Co, results
showed increasing trend in conversion efficiency till the optimization occurred at 18 wt. %. The
catalytic converter oxidized 93 and 96% CO and HCs emissions respectively
