Electron Microscopy Studies of Local Structural Modulations in Zeolite Crystals

Research output: Contribution to journalReview article

Abstract

Zeolites are widely used in catalysis, gas separation, ion exchange, etc. due to their superior physicochemical properties, which are closely related to specific features of their framework structures. Although more than two hundred different framework types have been recognized, it is of great interest to explore from a crystallographic perspective, the atomic positions, surface terminations, pore connectivity and structural defects that deviate from the ideal framework structures, namely local structural modulation. In this article, we review different types of local modulations in zeolite frameworks using various techniques, especially electron microscopy (EM). The most recent advances in resolving structural information at the atomic level with aberration corrected EM are also presented, commencing a new era of gaining atomic structural information, not only for all tetrahedral atoms including point vacancies in framework but also for extra-framework cations and surface terminations.

Details

Authors
  • Qing Zhang
  • Alvaro Mayoral
  • Junyan Li
  • Juanfang Ruan
  • Viveka Alfredsson
  • Yanhang Ma
  • Jihong Yu
  • Osamu Terasaki
Organisations
External organisations
  • ShanghaiTech University
  • University of Zaragoza
  • Jilin University
  • University of New South Wales
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry

Keywords

  • crystallography, electron microscopy, imaging, zeolites
Original languageEnglish
Pages (from-to)19571-19581
Number of pages11
JournalAngewandte Chemie
Volume132
Issue number44
Early online date2020 Jun 30
Publication statusPublished - 2020 Oct 26
Publication categoryResearch
Peer-reviewedYes