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Mesoporosity of Zeolite Y: Quantitative Three-Dimensional Study by Image Analysis of Electron Tomograms

Authors

  • Jovana Zečević,

    1. Inorganic Chemistry and Catalysis, Department of Chemistry, Utrecht University, Universiteitweg 99, 3584 CG Utrecht (The Netherlands)
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  • Dr. Cedric J. Gommes,

    1. Department of Chemical Engineering, Université de Liège B6A (Belgium)
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  • Dr. Heiner Friedrich,

    1. Laboratory of Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology (The Netherlands)
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  • Dr. Petra E. de Jongh,

    1. Inorganic Chemistry and Catalysis, Department of Chemistry, Utrecht University, Universiteitweg 99, 3584 CG Utrecht (The Netherlands)
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  • Prof. Dr. Krijn P. de Jong

    Corresponding author
    1. Inorganic Chemistry and Catalysis, Department of Chemistry, Utrecht University, Universiteitweg 99, 3584 CG Utrecht (The Netherlands)
    • Inorganic Chemistry and Catalysis, Department of Chemistry, Utrecht University, Universiteitweg 99, 3584 CG Utrecht (The Netherlands)
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  • J.Z., H.F., and K.P.de J. acknowledge support from the Dutch National Research School Combination Catalysis (NRSCC) and from NWO-CW. C.J.G. was supported by the Fonds de la Recherche Scientifique (F.R.S.-FNRS, Belgium). The Electron Tomography studies were carried out in the 3D Electron Microscopy group of Utrecht University headed by Dr. Willie Geerts and Dr. Jan Andries Post, with help from Hans Meeldijk. Dr. Gonzalo Prieto and Ad Mens were involved in physisorption.

Abstract

original image

Quantitative insight into the three-dimensional morphology of complex zeolite Y mesopore networks was achieved by combining electron tomography and image processing. Properties could be studied that are not measurable by other techniques, such as the size distribution of the intact microporous domains. This has great relevance in descriptions of the molecular diffusion through zeolite crystals and, hence, catalytic activity and selectivity.

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