XRD characteristics of Na-ZSM-5 synthesized from an organic-free system.
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概要
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XRD profiles of as-synthesized Na– and TPA–ZSM-5 were not identical. They became similar to each other, however, when both zeolites were converted into organic-free or organic-contained forms. In terms of the framework topology, Na–ZSM-5 resembled TPA–ZSM-5 but differed from so-called ZSM-8. SEM images revealed the Na–ZSM-5 crystal to exhibit a hexagonal-lath-shaped morphology. Due to the preferred orientations, the intensities of (0<I>k</I>0) and (<I>h</I>0<I>l</I>) reflections were intensified and diminished, respectively. The hexagonal flat plane of the Na–ZSM-5 crystal was (010). Therefore, the 10-membered-ring straight channels were strongly indicated to penetrate perpendicularly to the hexagonal flat plane of the as-synthesized Na–ZSM-5 crystal.
- 公益社団法人 日本化学会の論文
著者
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Takahashi Hiroshi
Institute Of Industrial Science The University Of Tokyo
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Saito Yasukazu
Institute of Industrial Science, The University of Tokyo
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Suzuki Minoru
Institute of Industrial Science, The University of Tokyo
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Dai Feng-Yuen
Institute of Industrial Science, University of Tokyo
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