The synthesis of porous catalysts involves various methods to achieve the desired pore structure and surface properties. Common synthesis techniques include:
Sol-gel method: A process involving the transition of a solution into a gel, followed by drying and calcination to form porous structures. Hydrothermal synthesis: Conducted in an aqueous solution under high temperature and pressure to produce crystalline porous materials like zeolites. Template-assisted synthesis: Using templates such as surfactants or block copolymers to create mesopores, which are removed after the formation of the material. Chemical vapor deposition (CVD): Involving the deposition of gaseous reactants onto a substrate to form porous coatings or films.