A transmission electron microscopy study of grain boundaries in zeolite L

C. B. de Gruyter, J. P. Verduijn, J. Y. Koo, S. B. Rice, Michael Treacy

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

TEM studies of a platelet form of zeolite L reveal two common types of grain boundary. The first involves an arbitrary translation, without rotation, between adjacent grains. The second involves a 30° relative rotation about the 6-fold c-axis, parallel to the platelet normal. The resulting 30° tilt boundaries have no periodic structure since the adjoining lattices are incommensurate. Occasionally, 30° twist boundaries are observed. These occur only in the vicinity of 30° tilt boundaries, and appear to be outgrowths anchored by one of the grains. In plan view, the 30° twist boundaries exhibit aperiodic moiré patterns generated by the incommensurate overlying hexagonal nets. Such overlayers can block about 90% of the intersected channels of the one-dimensional pore system of zeolite L.

Original languageEnglish (US)
Pages (from-to)102-107
Number of pages6
JournalUltramicroscopy
Volume34
Issue number1-2
DOIs
StatePublished - 1990
Externally publishedYes

Fingerprint

Zeolites
Platelets
Grain boundaries
grain boundaries
Transmission electron microscopy
transmission electron microscopy
Periodic structures
platelets
porosity

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation

Cite this

A transmission electron microscopy study of grain boundaries in zeolite L. / de Gruyter, C. B.; Verduijn, J. P.; Koo, J. Y.; Rice, S. B.; Treacy, Michael.

In: Ultramicroscopy, Vol. 34, No. 1-2, 1990, p. 102-107.

Research output: Contribution to journalArticle

de Gruyter, C. B. ; Verduijn, J. P. ; Koo, J. Y. ; Rice, S. B. ; Treacy, Michael. / A transmission electron microscopy study of grain boundaries in zeolite L. In: Ultramicroscopy. 1990 ; Vol. 34, No. 1-2. pp. 102-107.
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