What are the Challenges in Auto Exhaust Catalysts?
Despite their effectiveness, auto exhaust catalysts face several challenges:
1. Thermal Degradation: High temperatures can sinter the precious metal particles, reducing their surface area and catalytic activity. 2. Poisoning: Contaminants like sulfur, lead, and phosphorus can deactivate the catalyst by binding to the active sites. 3. Aging: Over time, the catalyst can suffer from thermal and chemical degradation, necessitating periodic replacement or regeneration.
