Catalyst deactivation is a common phenomenon where a catalyst loses its activity and selectivity due to various reasons. The primary mechanisms of deactivation include:
Coke formation: Deposition of carbonaceous materials on the active sites. Sintering: Aggregation of catalyst particles leading to loss of surface area. Poisoning: Strong chemisorption of impurities on the active sites. Leaching: Loss of active components from the catalyst structure.
