Effect of reaction temperature on Fe–Al analcime formation |
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Authors: | Kazuko Katsuki Hidenori Suzuki Masatoshi Hasegawa Michiko Heike Noriko Hosomachi Yuya Yamashita Yuta Nakamura |
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Affiliation: | (1) Department of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan |
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Abstract: | The effects of reaction period, temperature, and iron species on the zeolite framework type were studied in this work. Gismondine (GIS) is usually synthesized by hydrothermal method at 80°C from sodium metasilicate and aluminum nitrate as starting materials preferentially independent of the presence/absence of iron source. However, the present work revealed that pure analcime (ANA) could be formed at temperatures more than 120°C. A large polyhedral ANA crystal with a diameter of 180 μm was obtained even at a comparatively low temperature such as 150°C at a short reaction period of 1 week. The presence of iron source promoted the formation of pure ANA. Infrared spectroscopy, X-ray diffraction, and ICP-OES analysis suggested that the iron component added as a reactant was incorporated into the ANA framework through the isomorphous substitution for Al. |
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Keywords: | Zeolites Fe– Al analcime Gismondine Faujasite |
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