Several techniques are employed to apply catalyst coatings, including:
- Impregnation: The substrate is soaked in a solution containing the catalytic material, followed by drying and calcination. - Chemical Vapor Deposition (CVD): A gas-phase process where precursor gases react on the substrate surface, forming a thin film. - Electrodeposition: Electrochemical technique where the catalytic material is deposited onto the substrate from a solution. - Sol-Gel Method: A chemical process where a solution (sol) undergoes gelation to form a porous network that can be calcined to produce the coating.
Each method has its advantages and limitations, chosen based on the desired coating characteristics and application requirements.