Crystallization behavior of zeolite beta during steam-assisted crystallization of dry gel
書誌事項
- 公開日
- 2002-10
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- DOI
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- 10.1016/s1387-1811(02)00412-2
- 公開者
- Elsevier BV
この論文をさがす
説明
Abstract Zeolite beta with SiO 2 /Al 2 O 3 ratios from 30 to 730 was synthesized by a steam-assisted crystallization method, and the crystallized products obtained within 24 h were characterized by means of chemical analyses, XRD, FE-SEM, 29 Si-MAS NMR, N 2 adsorption, and temperature-programmed decomposition of tetraethylammonium cation occluded in the micropores of zeolite beta. Based on these results, the crystallization mechanism is discussed herein. It was found that agglomerates of nano-particles were formed from a dry gel before the development of a periodical structure in a long-range order, which can be detected by XRD. After several hours of crystallization, morphological changes in nano-particle agglomerates proceeded to give highly crystalline zeolite beta.
収録刊行物
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- Microporous and Mesoporous Materials
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Microporous and Mesoporous Materials 56 (1), 1-10, 2002-10
Elsevier BV