Effect of reaction temperature on Fe–Al analcime formation

Autor:	Masatoshi Hasegawa, Yuya Yamashita, Michiko Heike, Yuta Nakamura, Hidenori Suzuki, Kazuko Katsuki, Noriko Hosomachi
Rok vydání:	2007
Předmět:	Analcime Chemistry Mechanical Engineering Inorganic chemistry Infrared spectroscopy engineering.material Faujasite Hydrothermal circulation Catalysis Mechanics of Materials Isomorphous substitution engineering General Materials Science Gismondine Zeolite
Zdroj:	Journal of Porous Materials. 14:443-448
ISSN:	1573-4854 1380-2224
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3a13ee45645a933c0b4b87f7c5a582a6 https://doi.org/10.1007/s10934-006-9038-6 Zobrazit plný text záznamu Full text from SpringerLink