Synthesis and evaluation of bulky Y-zeolites by hydrothermal hot-pressing method

Atsushi Nakahira; Shinichi Takezoe; Yuki Yamasaki; Yukichi Sasaki; Yuichi Ikuhara

doi:10.1111/j.1551-2916.2007.01721.x

Synthesis and evaluation of bulky Y-zeolites by hydrothermal hot-pressing method

Atsushi Nakahira, Shinichi Takezoe, Yuki Yamasaki, Yukichi Sasaki, Yuichi Ikuhara

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2322-2326
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	90
Issue number	8
DOIs	https://doi.org/10.1111/j.1551-2916.2007.01721.x
Publication status	Published - 2007 Aug

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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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.",

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AU - Nakahira, Atsushi

AU - Takezoe, Shinichi

AU - Yamasaki, Yuki

AU - Sasaki, Yukichi

AU - Ikuhara, Yuichi

PY - 2007/8

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