Framework determination of a polytype of zeolite beta by using electron crystallography

Tetsu Ohsuna; Zheng Liu; Osamu Terasaki; Kenji Hiraga; Miguel A. Camblor

doi:10.1021/jp0130463

Framework determination of a polytype of zeolite beta by using electron crystallography

Tetsu Ohsuna^*, Zheng Liu, Osamu Terasaki, Kenji Hiraga, Miguel A. Camblor

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

During a trial of synthesizing pure silica zeolite beta, we found recently ITQ-14 was a multiphase crystal and contained small peculiar pillars overgrown on ordinary beta zeolite. We have developed a new method applicable for solving a structure of this kind, i.e., Fourier reconstruction of high resolution transmission electron microscopy (HRTEM) images and enhancement of the atomic positions in blurred potential map obtained by the reconstruction with a support of Patterson map derived from selected area electron diffraction (SAED) patterns, which contain structural information with much higher resolution than that of HRTEM images. The new framework solution obtained by this method turned out to be a structure type C of beta, which was hypothetically proposed by Newsam et al., and we reported it briefly with observation results of surface structure of the framework. In the present paper, basic idea and the determination process are fully discussed.

Original language	English
Pages (from-to)	5673-5678
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	106
Issue number	22
DOIs	https://doi.org/10.1021/jp0130463
Publication status	Published - Jun 6 2002
Externally published	Yes

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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abstract = "During a trial of synthesizing pure silica zeolite beta, we found recently ITQ-14 was a multiphase crystal and contained small peculiar pillars overgrown on ordinary beta zeolite. We have developed a new method applicable for solving a structure of this kind, i.e., Fourier reconstruction of high resolution transmission electron microscopy (HRTEM) images and enhancement of the atomic positions in blurred potential map obtained by the reconstruction with a support of Patterson map derived from selected area electron diffraction (SAED) patterns, which contain structural information with much higher resolution than that of HRTEM images. The new framework solution obtained by this method turned out to be a structure type C of beta, which was hypothetically proposed by Newsam et al., and we reported it briefly with observation results of surface structure of the framework. In the present paper, basic idea and the determination process are fully discussed.",

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T1 - Framework determination of a polytype of zeolite beta by using electron crystallography

AU - Ohsuna, Tetsu

AU - Liu, Zheng

AU - Terasaki, Osamu

AU - Hiraga, Kenji

AU - Camblor, Miguel A.

PY - 2002/6/6

Y1 - 2002/6/6

N2 - During a trial of synthesizing pure silica zeolite beta, we found recently ITQ-14 was a multiphase crystal and contained small peculiar pillars overgrown on ordinary beta zeolite. We have developed a new method applicable for solving a structure of this kind, i.e., Fourier reconstruction of high resolution transmission electron microscopy (HRTEM) images and enhancement of the atomic positions in blurred potential map obtained by the reconstruction with a support of Patterson map derived from selected area electron diffraction (SAED) patterns, which contain structural information with much higher resolution than that of HRTEM images. The new framework solution obtained by this method turned out to be a structure type C of beta, which was hypothetically proposed by Newsam et al., and we reported it briefly with observation results of surface structure of the framework. In the present paper, basic idea and the determination process are fully discussed.

AB - During a trial of synthesizing pure silica zeolite beta, we found recently ITQ-14 was a multiphase crystal and contained small peculiar pillars overgrown on ordinary beta zeolite. We have developed a new method applicable for solving a structure of this kind, i.e., Fourier reconstruction of high resolution transmission electron microscopy (HRTEM) images and enhancement of the atomic positions in blurred potential map obtained by the reconstruction with a support of Patterson map derived from selected area electron diffraction (SAED) patterns, which contain structural information with much higher resolution than that of HRTEM images. The new framework solution obtained by this method turned out to be a structure type C of beta, which was hypothetically proposed by Newsam et al., and we reported it briefly with observation results of surface structure of the framework. In the present paper, basic idea and the determination process are fully discussed.

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Framework determination of a polytype of zeolite beta by using electron crystallography

Abstract

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