USY molecular sieve is widely used in the petroleum refining industry, particularly in fluid catalytic cracking (FCC) processes, to enhance the conversion of heavy hydrocarbons into lighter, more valuable products like gasoline and diesel. Its high thermal stability and acidity make it effective in breaking down large hydrocarbon molecules. Additionally, it is employed in hydrocracking and isomerization processes to improve fuel quality and yield. Beyond refining, it plays a role in gas purification, adsorbing impurities such as water, carbon dioxide, and sulfur compounds. In the petrochemical sector, it is utilized for alkylation and aromatization reactions, contributing to the production of key chemicals and intermediates. Its versatility and efficiency make it a critical component in industrial catalysis and separation processes.