Synthesis and catalytic cracking performance of Fe/Ti-ZSM-5 zeolite from attapulgite mineral

doi:10.1016/S1872-2067(12)60638-X

Abstract

Abstract: Fe/Ti-ZSM-5 zeolite was synthesized successfully from treated attapulgite (ATP). This mineral consists of amorphous silica containing Fe and Ti species. X-ray diffraction patterns, scanning electron microscopy images, and nitrogen sorption isotherms indicate that the sample has a typical MFI structure, high crystallinity, and large specific surface area. Temperature-programmed desorption of ammonia and H₂ temperature-programmed reduction indicates that the Fe/Ti-ZSM-5 zeolite is strongly acidic and has superior redox properties. More importantly, compared with conventional ZSM-5 zeolite, Fe/Ti-ZSM-5 performs well, resulting in an increase in yield of 0.21% propylene and 0.33% total light olefins in the catalytic cracking of Canadian LGO (light gas oil). These results suggest that the presence of Fe and Ti species in ZSM-5 zeolite is favorable for enhancing light olefin yields, which is potentially important for oil refining in the future.

Key words: Natural attapulgite, Iron, Titanium, ZSM-5 zeolite, Catalytic cracking, Light olefins, Propylene

Xiaozhao Zhou, Yan Liu, Xiangju Meng, Baojian Shen, Feng-Shou Xiao. Synthesis and catalytic cracking performance of Fe/Ti-ZSM-5 zeolite from attapulgite mineral[J]. Chinese Journal of Catalysis, 2013, 34(8): 1504-1512.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(12)60638-X

https://www.cjcatal.com/EN/Y2013/V34/I8/1504

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