There are several methods to encapsulate catalysts within microparticles:
Sol-Gel Method: Involves the transition of a system from a liquid "sol" into a solid "gel" phase. It is commonly used for encapsulating metal oxides and silica-based materials. Emulsion Polymerization: A technique where the catalyst is dispersed in a monomer solution, which is then polymerized to form a protective shell around the catalyst. Spray Drying: Converts a liquid mixture containing the catalyst and encapsulating material into dry particles by rapidly drying with hot gas. Layer-by-Layer (LbL) Assembly: Involves the alternate deposition of oppositely charged layers around the catalytic material to form a multilayered shell.
