What are the Effects of Crystallite Size on Catalytic Activity?
The effect of crystallite size on catalytic activity varies depending on the type of reaction and the nature of the catalyst:
Surface Area: Smaller crystallites generally offer a higher surface area, enhancing the availability of active sites for catalytic reactions. Active Site Density: The density of active sites can be higher in smaller crystallites, potentially increasing catalytic activity. Thermal Stability: Larger crystallites tend to be more thermally stable and resistant to sintering, whereas smaller crystallites can coalesce at high temperatures, leading to deactivation.
