Several mechanisms contribute to catalyst degradation:
Poisoning: The active sites of the catalyst are blocked by impurities or by-products, making them unavailable for the intended reaction. Fouling: The buildup of deposits on the catalyst surface hinders the interaction between reactants and the catalyst. Thermal Degradation: High temperatures can lead to sintering, where catalyst particles agglomerate, reducing surface area and activity. Mechanical Wear: Physical abrasion or crushing can reduce the structural integrity of the catalyst.
