Lecture

Catalysis: TWC Evolution

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Description

This lecture covers the evolution of catalysis for emission control and energy production, focusing on the Three-Way Catalyst (TWC). It discusses the main reasons for using precious metals like Pt, Pd, and Rh in TWC, their resistance to poisoning, thermal stability, and interaction with support materials. The lecture also explains the thermodynamics of precious metals in TWC reactions, the importance of oxygen storage capacity using compounds like CeO2, and the characterization of catalysts through activity, stability, selectivity, and oxygen storage capacity. Additionally, it explores the measurement of TWC performance under various conditions and the role of On-Board Diagnostics (OBD) in monitoring catalyst efficiency.

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