Several factors contribute to the development of catalytic resistance:
1. Deactivation: This is the loss of catalytic activity and can be caused by various factors such as poisoning, fouling, thermal degradation, and sintering. 2. Poisoning: Certain substances, known as poisons, adsorb strongly onto the active sites of the catalyst, preventing the reactants from accessing these sites. 3. Fouling: The accumulation of unwanted materials on the catalyst surface, which blocks active sites and impedes the catalytic process. 4. Thermal Degradation: High temperatures can cause physical and chemical changes in the catalyst structure, leading to a loss of active sites. 5. Sintering: The agglomeration of catalyst particles at high temperatures, which reduces the surface area available for reactions.
