Zeolites are microporous aluminosilicate minerals widely used as catalysts and molecular sieves in chemical industries due to their unique crystalline framework composed of interconnected SiO₄ and AlO₄ tetrahedra. Their well-defined pore structure, high surface area, and ion-exchange properties make them highly effective in refining processes such as catalytic cracking, hydrocracking, and isomerization, particularly in the petroleum sector. Zeolites are also employed in gas separation, detergents, and environmental cleanup by trapping pollutants or facilitating selective reactions. They function as solid acid catalysts, offering shape selectivity that enables only certain molecules to undergo transformation, thus ensuring higher product yields and efficiency. Being thermally stable, reusable, and environmentally friendly, zeolites significantly reduce energy consumption and harmful emissions in industrial processes. However, they can deactivate over time due to coke formation, and their synthesis can be expensive, especially for advanced nano-structured forms. Despite these limitations, zeolites remain in high demand globally, with innovations like nano-zeolites and hierarchical zeolites further improving catalytic performance and extending their applications. Their non-toxic nature and ability to promote green chemistry make them indispensable in modern industries striving for efficiency and sustainability.