The importance of pore shape in catalysis cannot be overstated. The interaction between the reactants and the catalyst occurs within these pores. Therefore, the shape and size of these pores can control the rate of diffusion, the distribution of active sites, and the selectivity of the catalytic process. For example, catalysts with well-defined pore structures can enhance the selectivity for specific reactions by restricting the movement of larger molecules while allowing smaller ones to pass through.
