How do Promoters and Inhibitors Affect Active Sites?
Promoters and inhibitors can significantly alter the behavior of active sites:
- Promoters enhance the activity of the active sites. They can provide additional active sites or modify the existing ones to make them more effective. For example, alkali metals are often used as promoters in ammonia synthesis.
- Inhibitors reduce the activity of the active sites. They can block the sites or change their chemical nature. Sulfur compounds, for instance, are well-known inhibitors of metal catalysts in hydrodesulfurization.
