Several techniques are employed to rejuvenate catalysts:
1. Regeneration: This involves removing poisons or fouling agents to restore the catalyst's activity. Common methods include thermal treatments, chemical treatments, and oxidative treatments. 2. Reactivation: This process involves reintroducing active sites or re-dispersing the active phase. Methods include re-impregnation or redispersion of active materials. 3. Reforming: This involves structural modifications to restore or enhance the catalyst’s properties. Techniques include hydrothermal treatments and restructuring through controlled atmospheres.
