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ID 34806
本文ファイル
著者
Goto, Ikuhiro
Itakura, Masaya
Shibata, Syohei
Honda, Koutaro
Ide, Yusuke
キーワード
Hydrothermal conversion
Interzeolite conversion
LEV-type zeolite
CHA-type zeolite
Less dense zeolite
NDC
生物科学・一般生物学
抄録(英)
Hydrothermal conversion of LEV-type zeolite into CHA-type zeolite occurred in the absence of both an organic structure-directing agent and a seed crystal. The LEV-CHA transformation proceeds from a more dense zeolite (LEV) to a less dense one (CHA). When amorphous aluminosilicate hydrogels were used as starting materials, the CHA-type zeolite was not obtained under the present hydrothermal synthesis conditions. From the fact that the LEV-CHA transformation proceeded at lower alkalinity conditions, it was suggested that locally ordered aluminosilicate species (nanoparts) produced by decomposition/dissolution of the starting LEV-type zeolite contribute to the transformation process. On the other hand, at higher alkalinity than that used for the CHA-type zeolite synthesis, LEV-LTA transformation occurred effectively and selectively. These results suggest that there is a large difference in the structures of nanoparts generated by decomposition/dissolution of the starting zeolite in the LEV-CHA and LEV-LTA transformations.
掲載誌名
Microporous and Mesoporous Materials
158巻
開始ページ
117
終了ページ
122
出版年月日
2012
出版者
Elsevier Science BV
ISSN
1387-1811
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
(c) 2012 Elsevier Inc. All rights reserved.
関連情報URL
部局名
工学研究科