Well-Organized Zeolite Nanocrystal Aggregates with Interconnected Hierarchically Micro–Meso–Macropore Systems Showing Enhanced Catalytic Performance

Authors

  • Dr. Xiao-Yu Yang ,

    Corresponding author
    1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070 (P.R. China)
    2. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur (FUNDP), 61, rue de Bruxelles, 5000 Namur (Belgium), Fax: (+32) 81-725414
    3. Chargé de recherché FNRS (Fonds National de la Recherche Scientifique)
    • State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070 (P.R. China)
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  • Dr. Ge Tian,

    1. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur (FUNDP), 61, rue de Bruxelles, 5000 Namur (Belgium), Fax: (+32) 81-725414
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  • Dr. Li-Hua Chen,

    1. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur (FUNDP), 61, rue de Bruxelles, 5000 Namur (Belgium), Fax: (+32) 81-725414
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  • Dr. Yu Li ,

    1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070 (P.R. China)
    2. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur (FUNDP), 61, rue de Bruxelles, 5000 Namur (Belgium), Fax: (+32) 81-725414
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  • Dr. Joanna C. Rooke,

    1. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur (FUNDP), 61, rue de Bruxelles, 5000 Namur (Belgium), Fax: (+32) 81-725414
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  • Dr. Ying-Xu Wei,

    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
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  • Prof. Dr. Zhong-Min Liu,

    Corresponding author
    1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    • Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
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  • Dr. Zhao Deng,

    1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070 (P.R. China)
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  • Prof. Dr. Gustaaf Van Tendeloo,

    1. EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium)
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  • Prof. Dr. Bao-Lian Su 

    Corresponding author
    1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070 (P.R. China)
    2. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur (FUNDP), 61, rue de Bruxelles, 5000 Namur (Belgium), Fax: (+32) 81-725414
    • State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070 (P.R. China)
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Abstract

Preparation and characterization of well-organized zeolitic nanocrystal aggregates with an interconnected hierarchically micro–meso–macro porous system are described. Amorphous nanoparticles in bimodal aluminosilicates were directly transformed into highly crystalline nanosized zeolites, as well as acting as scaffold template. All pores on three length scales incorporated in one solid body are interconnected with each other. These zeolitic nanocrystal aggregates with hierarchically micro–meso–macroporous structure were thoroughly characterized. TEM images and 29Si NMR spectra showed that the amorphous phase of the initial material had been completely replaced by nanocrystals to give a micro–meso–macroporous crystalline zeolitic structure. Catalytic testing demonstrated their superiority due to the highly active sites and the presence of interconnected micro–meso–macroporosity in the cracking of bulky 1,3,5-triisopropylbenzene (TIPB) compared to traditional zeolite catalysts. This synthesis strategy was extended to prepare various zeolitic nanocrystal aggregates (ZSM-5, Beta, TS-1, etc.) with well-organized hierarchical micro–meso–macroporous structures.

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