Microporous and Mesoporous ZSM-5 Catalyst for Catalytic Cracking of C-5 Raffinate to Light Olefins

作者：Lee Joongwon; Hong Ung Gi; Hwang Sunhwan; Youn Min Hye; Song In Kyu^*

来源：Journal of Nanoscience and Nanotechnology, 2014, 14(11): 8817-8822.

DOI：10.1166/jnn.2014.9944

• Porous ZSM5
• Catalytic Cracking
• C-5 Raffinate
• Light Olefin

ZSM5 catalysts (PAM(X)-ZSM5) with micropores and mesopores were prepared using polyacrylamide (PAM) as a soft template at different PAM content (X = 0, 0.12, 0.25, 0.53, 0.64, and 0.78 wt%), and they were applied to the production of light olefins (ethylene and propylene) through catalytic cracking of C-5 raffinate. The effect of PAM content of PAM(X)-ZSM5 catalysts on the physicochemical properties and catalytic activities was investigated. N-2 adsorption-desorption isotherms of PAM(X)-ZSM5 catalysts exhibited a broad hysteresis loop at high relative pressure, indicating the existence of mesopores in the catalysts. It was found that the catalytic performance of PAM(X)-ZSM5 catalysts was closely related to the mesoporosity of the catalysts. Conversion of C-5 raffinate and yield for light olefins showed volcano-shaped trends with respect to mesopore/micropore volume ratio of the catalysts. Thus, an optimal PAM content was required to achieve maximum production of light olefins through catalytic cracking of C-5 raffinate over microporous and mesoporous PAM(X)-ZSM5 catalysts.

• 出版日期2014-11