How Do Poisoning and Deactivation Affect Catalysts?
Catalyst poisoning and deactivation are processes that reduce the catalyst's activity. Poisoning occurs when impurities bind to active sites, blocking reactants. Deactivation can result from:
1. Sintering: The aggregation of catalyst particles at high temperatures, reducing surface area. 2. Coking: The deposition of carbonaceous materials on the catalyst surface. 3. Leaching: The loss of active components from the catalyst.
