TY - JOUR
T1 - Synthesis and evaluation of bulky Y-zeolites by hydrothermal hot-pressing method
AU - Nakahira, Atsushi
AU - Takezoe, Shinichi
AU - Yamasaki, Yuki
AU - Sasaki, Yukichi
AU - Ikuhara, Yuichi
PY - 2007/8
Y1 - 2007/8
N2 - 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.
AB - 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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U2 - 10.1111/j.1551-2916.2007.01721.x
DO - 10.1111/j.1551-2916.2007.01721.x
M3 - Article
AN - SCOPUS:34547672788
VL - 90
SP - 2322
EP - 2326
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 8
ER -