Several factors can contribute to incomplete regeneration:
Deactivation Mechanisms: The catalyst may undergo irreversible changes such as sintering, poisoning, or fouling, which cannot be reversed by standard regeneration techniques. Regeneration Conditions: Insufficient temperature, pressure, or the presence of regenerating agents can lead to incomplete removal of deactivating species. Structural Changes: Prolonged exposure to reaction conditions can alter the catalyst’s structure, making it less responsive to regeneration.
