Chinese Journal of Catalysis ›› 2026, Vol. 89: 464-476.DOI: 10.1016/S1872-2067(26)65176-5

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Ultrathin ZSM-5 zeolite nanocrystals synthesized from purely inorganic precursors

Jiaqi Zhaoa, Peiyu Shena, Zhengxing Qina,*(), Camille Longueb, Nourrdine Chaouatib, Ruizhe Zhangb, Xiao Chenc, Shunsuke Asahinad,e, Natsuko Asanod,e, Gabriel Rueffb, Eddy Dibb, Hongman Suna, Libin Kangg, Jiujiang Wangh, Hongjuan Zhaoh, Honghai Liuh, Shutao Xui, Ludovic Pinardb, Zifeng Yana, Svetlana Mintovaa,b,*()   

  1. aState Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China
    bUniversité de Caen Normandie, ENSICAEN, CNRS, LCS,Laboratoire Catalyse et Spectrochimie, 14000 Caen, France
    cBeijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
    dSM Application planning group, JEOL Ltd., Akishima, Tokyo 196-8558, Japan
    eAdvanced Material Analysis Co-creation Research Center, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
    fDepartment of Applied Chemistry for Environment, Graduate School of Urban Environmental Sci-ences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
    gShandong Kehan Silicon Source New Material Co.,Ltd. Linyi 276000, China
    hPetrochemical Research Institute, PetroChina Company Limited, Beijing 100195, China
    iNational Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
  • Received:2026-02-10 Accepted:2026-04-07 Online:2026-10-18 Published:2026-09-01
  • Contact: *E-mail:zhengxing.qin@upc.edu.cn(Z. Qin),svetlana.mintova@ensicaen.fr(S. Mintova).
  • Supported by:
    National Natural Science Foundation of China(22472202);National Natural Science Foundation of China(22178389);Liaoning International Joint Laboratory Project(2024JH2/102100005);PetroChina(KYWX-22-012);PetroChina(KYWX-22-017);PetroChina(KYWX-24-003)

Abstract:

Ultrathin zeolite nanocrystals offer distinct advantages in catalysis, adsorption, and separation due to their enhanced exposure of crystal facets and improved molecular diffusion. The synthesis of ultrathin zeolites via template-free and additive-free approaches is highly desirable for sustainable and scalable production, yet remains a longstanding challenge. ZSM-5 nanosheets with a b-axis thickness as small as 10 nm were synthesized via seed-assisted crystallization in a purely inorganic aluminosilicate medium, without the use of organic templates, fluoride, or other additives. The influence of Silicalite-1 seed treatment history, a previously overlooked parameter on ZSM-5 crystallization was systematically investigated. The presence or absence of occluded organic template within the seeds critically modulates crystal morphology by affecting surface dissolution and secondary nucleation at the seed surface. Catalytic testing in methanol conversion indicates that, although structural variations due to nanoscale dimensions are minimal, differences in crystal morphology significantly influence catalytic selectivity. These findings underscore the crucial role of morphology control in tailoring the catalytic performance of zeolites.

Key words: ZSM-5 nanosheets, Seed assisted synthesis, Silicalite-1 zeolite, Morphology control, Methanol to olefins