Research of Cocatalyst for Decreasing Olefin in FCC Gasoline

with the improvement of environmental awareness, the requirement for ythe content of olefin in gasoline becomes stricter and stricter. Olefin reduction processes are developed very fast in China. Based on the development of olefin reduction research in the catalyst for catalytic cracking, we improved the catalytic cracking metal pasivator. Focusing on enhancing the hydrogen transfer activity of catalyst, its preparation route was proposed and a novel gasoline olefin content reducing catalytic cracking cocatalyst was developed. As the trial shows, using the cocatalyst not only possesses heavy metal tolerance, but also effectively lowers olefin content in FCC gasoline. It has higher hydrogen transfer activity, coordinating the aromatization and hydrogen transfer reactions. Moreover, it can also improve the distribution of FCC products.