SAPO-34 molecular sieve is widely used in the petrochemical industry for the conversion of methanol to olefins (MTO process). Its unique pore structure and acidity make it highly effective in selectively producing ethylene and propylene, which are essential building blocks for plastics and other chemicals. Additionally, it is employed in gas separation processes, particularly for the removal of carbon dioxide from natural gas streams, due to its ability to adsorb CO2 molecules efficiently. In environmental applications, SAPO-34 is utilized for the purification of air and water by trapping harmful pollutants. Its thermal stability and selectivity also make it a valuable material in catalytic reactions for industrial processes.