Additives play a crucial role in catalysis for several reasons: 1. Enhancing Activity: Some additives can increase the activity of a catalyst by improving the rate of reaction. 2. Improving Selectivity: Additives can help in steering the reaction towards the desired product, thus minimizing the formation of unwanted by-products. 3. Stabilizing Catalysts: Certain additives can enhance the thermal or mechanical stability of catalysts, extending their lifetime and efficiency. 4. Poison Resistance: Additives can provide resistance against catalyst poisons, which are substances that deactivate the catalyst.
