首页|Development of hierarchical ZSM-11 for synthesis of light olefins from crude oil

Development of hierarchical ZSM-11 for synthesis of light olefins from crude oil

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  • NETL
  • NSTL
  • Elsevier
© 2024 Elsevier B.V.ZSM-11 is recognized as a shape-selective catalyst in various industrial processes; however, the significance of hierarchical ZSM-11 in the direct conversion of crude oil to light olefins remains unexplored. Herein, we report a template-directed hydrothermal method to synthesize hierarchical ZSM-11 zeolite with varying secondary mesopore sizes, acidities, and morphologies. The synthesis strategy controlled the development of uniform nanorods or accumulating nanosized zeolites with SiO2/Al2O3 molar ratios of 30, 35, and 70. The developed two-dimensional 10-membered ring straight channels ZSM-11 catalyst were employed firstly for the steam catalytic cracking of light crude oil to produce light olefins (C2-C4). Amongst the various developed catalysts, ZSM-11(35), a hierarchical zeolite with SiO2/Al2O3 molar ratio of 35, outperformed in terms of crude oil cracking conversion (∼66.5 %) and selectivity to C2-C4 light olefins (44.1 %). In comparison to diffusion over sinusoidal channels in ZSM-5, ZSM-11 zeolite with tortuous and straight channels facilitated rapid mass transport at low coke deposition.

Crude oil crackingHierarchical nano ZSM-11 zeoliteIntercrystalline mesoporeLight olefinsMass transport

Waqas M.、Qureshi Z.S.、Siddiqui M.A.、Aitani A.、Akah A.C.

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Interdisciplinary Research Center for Refining & Advanced Chemicals King Fahd University of Petroleum & Minerals

Interdisciplinary Research Center for Refining & Advanced Chemicals King Fahd University of Petroleum & MineralsInterdisciplinary Research Center for Refining & Advanced Chemicals King Fahd University of Petroleum & Minerals||Department of Chemistry King Fahd University of Petroleum & Minerals||

Interdisciplinary Research Center for Refining & Advanced Chemicals King Fahd University of Petroleum & Minerals||Chemical Engineering Department King Fahd University of Petroleum & Minerals

Research & Development Center Saudi Aramco

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2025

10.1016/j.jaap.2024.106870

Journal of analytical & applied pyrolysis

Journal of analytical & applied pyrolysis

ISSN：0165-2370
年,卷(期)：2025.185(Jan.)
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