Diesel Emission Control: Catalysts and Temperature Optimization

This lecture discusses the challenges of catalyst temperature in Diesel engines, comparing them to gasoline engines and highlighting the need to improve light-off temperature for efficient CO and HC oxidation. It explores the composition and preparation of Diesel oxidation catalysts, emphasizing the role of Pt and Pd metals, support materials like Al2O3, and optional additives such as SiO2 and zeolites. The lecture also covers the influence of supporting oxides on catalyst activity, the inhibition of NO oxidation by CO and HC, and the deactivation mechanisms of catalysts due to thermal and chemical factors.