Surface Chemistry — Chemistry STD 12 Science — Question

A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shape-selective catalysis. The pore size present in the zeolites ranges from 260-740pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction.