Several factors can contribute to the loss of stability in catalysts:
Thermal Degradation: High temperatures can cause sintering, where metal particles agglomerate, reducing the active surface area. Poisoning: Impurities in the reactants or reaction environment can bind to the active sites, rendering them inactive. Fouling: Accumulation of by-products or contaminants on the catalyst surface can block active sites. Mechanical Attrition: Physical wear and tear due to fluid flow or agitation can degrade the catalyst structure. Chemical Deactivation: Chemical reactions involving the catalyst itself can alter its composition and reduce its activity.
