Porosity refers to the presence of pores within a material. The size, distribution, and connectivity of these pores can significantly affect the performance of a catalyst.
1. Micropores (pores less than 2 nm) can provide high surface areas but may restrict the diffusion of reactants and products. 2. Mesopores (pores between 2 nm and 50 nm) offer a good balance between surface area and accessibility. 3. Macropores (pores greater than 50 nm) facilitate easy diffusion but may result in lower surface areas.
