Controllable Synthesis of Short b‐Axis Hierarchical Pores ZSM‐5 Zeolite by Reduces the Binding Energy of Crystal Faces

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Abstract
The controlled synthesis of short b‐axis zeolites with enhanced diffusion properties is constrained by the growth rate mismatch stemming from the intrinsic binding energy of different crystal faces. Here, a kinetically controlled growth modification strategy is proposed to achieve directional regulation of the length–diameter ratio of short b‐axis zeolites. The dynamic growth rate of amorphous precursor along different crystal faces determines the length–diameter ratio of zeolite. MFI/MEL symbionts are employed to modulate the growth rate of amorphous precursors across various crystal faces and subsequently control the length–diameter ratio by reducing the binding energy between amorphous precursors and microcrystalline surfaces. This non‐classical growth approach promotes the formation of intracrystalline mesoporous structures, leading to superior methylcyclohexane cracking performance due to enhanced diffusion capabilities. The kinetically controlled strategy elucidates the dynamic regulation mechanism and enables effective control over the length–diameter ratio of zeolites.
Funding Information
  • National Natural Science Foundation of China (22078364)
  • State Key Laboratory of Heavy Oil Processing

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