Yes, catalysts can be deactivated over time due to several reasons:
Poisoning: Impurities or by-products can adsorb onto the catalyst surface, blocking active sites. Sintering: High temperatures can cause catalyst particles to agglomerate, reducing the available surface area. Coking: Deposition of carbonaceous materials can cover the active sites, rendering the catalyst ineffective.
Deactivation can contribute to incomplete reactions as the catalyst loses its effectiveness.
