論文

査読有り
2017年6月

Rational seed-directed synthesis of MSE-type zeolites using a simple organic structure-directing agent by extending the composite building unit hypothesis

MICROPOROUS AND MESOPOROUS MATERIALS
  • Sibel Sogukkanli
  • ,
  • Kenta Iyoki
  • ,
  • Shanmugam P. Elangovan
  • ,
  • Keiji Itabashi
  • ,
  • Miku Takano
  • ,
  • Zhendong Liu
  • ,
  • Satoshi Inagaki
  • ,
  • Toru Wakihara
  • ,
  • Yoshihiro Kubota
  • ,
  • Tatsuya Okubo

245
開始ページ
1
終了ページ
7
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.micromeso.2017.02.073
出版者・発行元
ELSEVIER SCIENCE BV

Unlike previous reports stating that costly and bulky organic molecules are essential to form MSE-type zeolites, we report herein a simplified and efficient synthesis route to these multi-dimensional, large pore zeolites by using tetraethylammonium hydroxide (TEAOH) as an organic structure-directing agent (OSDA). Rather than conventional methods, alternative synthesis pathways in which such OSDAs are replaced with inexpensive and simple molecules cations are recently demanding. In order to select the OSDAs and determine the synthesis conditions from a huge "zeolite synthesis library," we applied the "composite building unit hypothesis" which we have proposed for the seed-directed, OSDA-free synthesis methods. By applying this hypothesis, a clear relation was found among MSE, *BEA, and MOR framework types. According to this relation, TEAOH which is basically utilized for the industrial production of *BEA-type zeolite was determined to be used in a modified gel composition as an easily reachable and comparatively inexpensive OSDA. This novel approach allowed us to obtain pure solid products with high yields by consecutively applying aging and hydrothermal synthesis steps. The series of characterizations revealed that the features of obtained products were similar to those of conventional MCM-68 with relatively better microporosity characteristics. Remarkably, the "second-generation" products can be synthesized via this novel route by optimizing the aging time. Considering the overall results, this method is the most simplified and efficient synthesis route for MSE-type zeolites, and we believe that this approach can be further extended to the synthesis of other multi-dimensional, large pore zeolites. (C) 2017 Elsevier Inc. All rights reserved.


リンク情報
DOI
https://doi.org/10.1016/j.micromeso.2017.02.073
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000401675400001&DestApp=WOS_CPL
URL
http://orcid.org/0000-0002-1111-7111
ID情報
  • DOI : 10.1016/j.micromeso.2017.02.073
  • ISSN : 1387-1811
  • eISSN : 1873-3093
  • ORCIDのPut Code : 31154224
  • Web of Science ID : WOS:000401675400001

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