Several strategies can be employed to prevent catalyst poisoning:
1. Purification of Reactants: Ensuring that the reactants are free from potential poisons can significantly reduce the risk of catalyst poisoning. For instance, removing sulfur compounds from feedstocks in petroleum refining. 2. Use of Promoters: Certain substances, known as promoters, can be added to the catalyst to enhance its resistance to poisoning. 3. Regeneration of Catalysts: Some catalysts can be regenerated by removing the poisons through processes like oxidation or reduction. 4. Design of Robust Catalysts: Developing catalysts with higher resistance to poisons can also be an effective strategy. For example, using bimetallic catalysts where one metal can help in reducing the impact of poisons on the other.
