論文

査読有り
2020年2月

Extremely Stable Zeolites Developed via Designed Liquid-Mediated Treatment

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  • Kenta Iyoki
  • ,
  • Kakeru Kikumasa
  • ,
  • Takako Onishi
  • ,
  • Yasuo Yonezawa
  • ,
  • Anand Chokkalingam
  • ,
  • Yutaka Yanaba
  • ,
  • Taiji Matsumoto
  • ,
  • Ryota Osuga
  • ,
  • Shanmugam P. Elangovan
  • ,
  • Junko N. Kondo
  • ,
  • Akira Endo
  • ,
  • Tatsuya Okubo
  • ,
  • Toru Wakihara

142
8
開始ページ
3931
終了ページ
3938
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/jacs.9b12709
出版者・発行元
AMER CHEMICAL SOC

Improving the stability of porous materials for practical applications is highly challenging. Aluminosilicate zeolites are utilized for adsorptive and catalytic applications, wherein they are sometimes exposed to high-temperature steaming conditions (similar to 1000 degrees C). As the degradation of high -silica zeolites originates from the defect sites in their frameworks, feasible defect-healing methods are highly demanded. Herein, we propose a method for healing defects to create extremely stable high-silica zeolites. High -silica (SiO2/Al2O3 > 240) zeolites with *BEA-, MFI-, and MOR-type topologies could be stabilized by significantly reducing the number of defect sites via a liquid-mediated treatment without using additional silylating agents. Upon exposure to extremely high temperature (900-1150 degrees C) steam, the stabilized zeolites retain their crystallinity and micropore volume, whereas the parent commercial zeolites degrade completely. The proposed self-defect-healing method provides new insights into the migration of species through porous bodies and significantly advances the practical applicability of zeolites in severe environments.

Web of Science ® 被引用回数 : 6

リンク情報
DOI
https://doi.org/10.1021/jacs.9b12709
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000517360400031&DestApp=WOS_CPL

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