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Determining the location and nearest neighbours of aluminium in zeolites with atom probe tomography

Author

Listed:
  • Daniel E. Perea

    (Pacific Northwest National Laboratory, Environmental Molecular Science Laboratory)

  • Ilke Arslan

    (Pacific Northwest National Laboratory, Institute for Integrated Catalysis)

  • Jia Liu

    (Pacific Northwest National Laboratory, Environmental Molecular Science Laboratory)

  • Zoran Ristanović

    (Faculty of Science, Debye Institute for Nanomaterials Science, Utrecht University)

  • Libor Kovarik

    (Pacific Northwest National Laboratory, Environmental Molecular Science Laboratory)

  • Bruce W. Arey

    (Pacific Northwest National Laboratory, Environmental Molecular Science Laboratory)

  • Johannes A. Lercher

    (Pacific Northwest National Laboratory, Institute for Integrated Catalysis
    TU Munich)

  • Simon R. Bare

    (UOP LLC, a Honeywell Company)

  • Bert M. Weckhuysen

    (Faculty of Science, Debye Institute for Nanomaterials Science, Utrecht University)

Abstract

Zeolite catalysis is determined by a combination of pore architecture and Brønsted acidity. As Brønsted acid sites are formed by the substitution of AlO4 for SiO4 tetrahedra, it is of utmost importance to have information on the number as well as the location and neighbouring sites of framework aluminium. Unfortunately, such detailed information has not yet been obtained, mainly due to the lack of suitable characterization methods. Here we report, using the powerful atomic-scale analysis technique known as atom probe tomography, the quantitative spatial distribution of individual aluminium atoms, including their three-dimensional extent of segregation. Using a nearest-neighbour statistical analysis, we precisely determine the short-range distribution of aluminium over the different T-sites and determine the most probable Al–Al neighbouring distance within parent and steamed ZSM-5 crystals, as well as assess the long-range redistribution of aluminium upon zeolite steaming.

Suggested Citation

  • Daniel E. Perea & Ilke Arslan & Jia Liu & Zoran Ristanović & Libor Kovarik & Bruce W. Arey & Johannes A. Lercher & Simon R. Bare & Bert M. Weckhuysen, 2015. "Determining the location and nearest neighbours of aluminium in zeolites with atom probe tomography," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
  • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8589
    DOI: 10.1038/ncomms8589
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    Cited by:

    1. Wenyan Zheng & Zhuo Wang & Weilin Chen & Mengchao Zhang & Hui Li & Guang Yang & Qiang Xu & Xvsheng Qiao & Dezhi Tan & Junjie Zhang & Jianrong Qiu & Guodong Qian & Xianping Fan, 2024. "Unlocking high photosensitivity direct laser writing and observing atomic clustering in glass," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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