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- Title
Synthesis and Evaluation of Bulky Y-Zeolites by Hydrothermal Hot-Pressing Method.
- Authors
Nakahira, Atsushi; Takezoe, Shinichi; Yamasaki, Yuki; Sasaki, Yukichi; Ikuhara, Yuichi
- Abstract
In this study, the syntheses of bulks of Y-zeolite were attempted by a hydrothermal hot-pressing (HHP) method with various conditions such as the amounts and concentrations of NaOH solution, reaction temperatures, and reaction times. Dense bulks of Y-zeolite were successfully obtained by this HHP method. Under an optimum synthetic condition of HHP, solidified bulks of Y-zeolite possessed translucency with high values of specific surface area. Transmission electron microscopy observation of these translucent bulks of Y-zeolite showed that their microstructures were densified like polycrystalline ceramics sintered by heat treatments and no amorphous phase was observed at the boundaries of Y-zeolite grains. As a result, in these unique bulks of Y-zeolite synthesized by the HHP method, the microporous network was thoroughly connected at the grain boundaries of Y-zeolite.
- Subjects
ZEOLITES; SILICATE minerals; MICROSTRUCTURE; MATERIALS; ELECTRON microscopy; MICROSCOPY
- Publication
Journal of the American Ceramic Society, 2007, Vol 90, Issue 8, p2322
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2007.01721.x