Zeolites are crystalline microporous aluminosilicates widely recognized for their unique structure, exceptional surface area, and tunable chemical properties. These materials are characterized by a highly ordered pore network and remarkable ion-exchange capabilities, making them indispensable in catalysis, adsorption, and separation processes. The significance of zeolites in catalysis lies in their ability to act as heterogeneous catalysts with high selectivity and efficiency, facilitating critical reactions in petrochemical refining and environmental remediation. Their framework, which accommodates various cations and functional groups, allows for precise tailoring of catalytic activity for specific reactions. Currently, researchers are focusing on developing hierarchical zeolites with mesopores to overcome the diffusion limitations inherent in traditional zeolites. These advanced materials enhance the accessibility of active sites and improve catalytic performance in bulky molecule transformations.