Quantitative HRTEM study of zeolite

N. Ohnishi, T. Ohsuna, Y. Sakamoto, O. Terasaki, K. Hiraga

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We demonstrate the application of a new technique of high-resolution transmission electron microscopy (HRTEM) study, which is assisted by a quantitative measurement of electron diffraction intensities using a slow-scan CCD camera, to the structure analysis of zeolite frameworks as well as materials incorporated in their micropores. A Fourier analysis of electron diffraction intensities, combined with crystallographic phase information derived from an observed HRTEM image, indicated individual projected T-atom positions of the MFI zeolite framework, with a resolution higher than the original HRTEM image. A Fourier map obtained from electron diffraction intensities of a Na-FAU zeolite containing MoS2 clusters clearly revealed additional potential distributions inside the supercages, compared with the original Na-FAU without MoS2. The kinematical diffraction approximation can be reasonably applied for the analysis, resulting in framework atom positions of these zeolites and location of incorporated materials with a resolution of fine details around 1 Å.

Original languageEnglish
Pages (from-to)581-588
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume21
Issue number4-6
DOIs
Publication statusPublished - 1998 May

Keywords

  • Crystal structure analysis
  • Electron crystallography
  • Electron diffraction
  • High-resolution electron microscopy
  • Zeolite

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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    Ohnishi, N., Ohsuna, T., Sakamoto, Y., Terasaki, O., & Hiraga, K. (1998). Quantitative HRTEM study of zeolite. Microporous and Mesoporous Materials, 21(4-6), 581-588. https://doi.org/10.1016/S1387-1811(98)00026-2