What Factors Influence the Activity of Heterogeneous Catalysts?
Several factors affect the activity of heterogeneous catalysts: - Surface Area: Higher surface area provides more active sites. - Surface Defects: Vacancies, steps, and kinks can act as active sites. - Particle Size: Smaller particles often exhibit higher catalytic activity due to increased surface area. - Support Material: Catalysts are often dispersed on supports (like alumina or silica) to enhance stability and distribution of active sites. - Promoters and Inhibitors: Additives that can enhance or reduce activity by modifying the electronic properties of the active sites.
