Arrayed PbI2 clusters in the spaces of zeolite LTA

N. Togashi, Y. Sakamoto, T. Ohsuna, O. Terasaki

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Zeolite LTA has cubic symmetry with different-sized α- and β-cages arranged in α CsCl type structure. Pbl2 clusters were incorporated into the cages of LTA through a vapor phase after dehydration. The structure of this complex system was studied as a function of cluster loading by X-ray diffraction (both single crystal and powder) and by electron microscopy. The clusters were formed inside the a-cages without destroying the framework and with a maximum loading density of ca. 3.8 Pbl2, clusters per α-cage. No symmetry changes were observed except for the specimens with the maximum loading. 3.8 Pbl2 /LTA showed a domain structure, and more than two different types of superlattice reflections were observed. The major phase has tetragonal symmetry, P4/ncc, and the structures and the arrangements of the clusters are discussed.

Original languageEnglish
Pages (from-to)267-273
Number of pages7
JournalMaterials Science and Engineering A
Volume312
Issue number1-2
DOIs
Publication statusPublished - 2001 Aug 15

Keywords

  • Arrayed clusters
  • Clusters
  • PbI
  • Superstructure
  • Zeolites

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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