1. Dispersing the Active Phase: Good supports help in the uniform dispersion of the active phase, preventing agglomeration and sintering.
2. Electronic Effects: The support can modify the electronic properties of the active phase, which can alter the catalytic activity and selectivity.
3. Acid-Base Properties: Supports can introduce acid or base sites that can participate in the catalytic reaction or modify the properties of the active phase.
4. Textural Properties: The surface area, porosity, and pore size distribution of the support can influence mass transfer and accessibility of reactants to the active sites.
