journal article·2025-08

Minimizing Sinusoidal Channels of ZSM‐5 for Propene Production From Molecular Traffic Controlled Cracking Reaction

Shiqing Li, Jie Tuo, Zheng Wan, Shuo Zhang, Muyang Yu, Ying Ma, Rusi Peng, Hao Xu, Jingang Jiang, Shifu Chen, Xiao He, Peng Wu

Small· Volume 21· Issue 32
Publisher page

Abstract

Abstract The molecular traffic control (MTC) effect, a critical concept in porous materials catalysis, describes the diffusion behavior of reactant and product molecules through pore channels within zeolites, thereby establishing a relationship between the pore system and the catalytic performance. Herein, a series of a ‐oriented MFI ‐type ZSM‐5 catalysts with modulated orientation length while maintaining comparable physicochemical properties are synthesized, and their performance in butene cracking reactions are evaluated. By precisely modulating the pore structure and crystal morphology of ZSM‐5, it is demonstrated that minimizing the sinusoidal channel length along a ‐axis effectively optimizes the MTC effect, resulting in a superior propene selectivity (≈60%) and an enhanced propene‐to‐ethene ratio (≈12). Computational simulations coupled with experimental measurements reveal that reducing the length along a ‐axis facilitates preferential outward diffusion of propene molecules as terminal products. This work not only provides solid proof of molecular traffic control but also offers theoretical guidance for the rational design of other useful porous catalysts.
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Research context

OpenAlex topics: Zeolite Catalysis and Synthesis · Mesoporous Materials and Catalysis · Catalytic Processes in Materials Science

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Chemistry and Materials Science Huaibei Normal University Hueibei Anhui 235000 P. R. China

State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou University Fuzhou 350116 P. R. China

State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University No. 3663 North Zhongshan Road Shanghai 200062 P. R. China

Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development Shanghai Frontiers Science Center of Molecule Intelligent Syntheses School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China

Funding

National Key Research and Development Program of China · Anhui Provincial Department of Education

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