What are Some Examples of Controlled Access Systems?
There are several notable examples of controlled access systems used in catalysis:
- Zeolites: These are microporous aluminosilicate minerals commonly used in industrial catalysis. The specific pore size and structure of zeolites can be tailored to control the access of reactants to the active sites. - Metal-Organic Frameworks (MOFs): MOFs are crystalline materials composed of metal ions coordinated to organic ligands. Their tunable pore sizes and high surface areas make them ideal candidates for controlled access systems. - Core-Shell Nanoparticles: These consist of a catalytic core surrounded by a shell that can regulate the diffusion of reactants. The shell can be engineered to have specific properties such as permeability and selectivity.
