Several techniques are employed to apply coatings on catalysts, including:
1. Impregnation: This involves soaking the catalyst in a solution containing the coating material, followed by drying and calcination. 2. Chemical Vapor Deposition (CVD): In this method, a volatile precursor is decomposed at high temperatures to form a uniform coating on the catalyst. 3. Sol-Gel Process: This technique involves the transition of a solution into a gel that forms a uniform coating upon drying and heating.
