Clay membrane with penetrate holes prepared from clay hydrous gel by ice-needle crystallization

  • KAWASAKI EIJI
    A & A Material Co. Ltd.
  • ISHII RYO
    National Institute of Advanced Industrial Science and Technology (AIST)
  • HAYASHI HIROMICHI
    National Institute of Advanced Industrial Science and Technology (AIST)
  • EBINA TAKEO
    National Institute of Advanced Industrial Science and Technology (AIST)

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We have prepared porous clay membranes from the clay gels using a freezing and a vacuum drying processes. The SEM observations revealed that the membranes possess channel-like holes whose diameter in between several to several ten micrometers. The oxygen permeability and acetaldehyde absorption tests indicate that the holes are penetrated from the bottom to the top of the membrane although they have not ideal strait channels. The mechanism of the formation of the holes is proposed; the freezing process yields ice-seeds on a substrate and the seeds grow along a direction to perpendicular to the substrate. The resultant needle-ice crystals lead to formation of channel-like penetrated holes in the membrane. Furthermore, composite membranes with the penetrate holes could be prepared with ZSM-5 or mordenite particles. As the result, we have developed novel-clay-based-membranes with many penetrate holes, which widen to apply for the reactor or filter devices.

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詳細情報

  • CRID
    1390001204111294336
  • NII論文ID
    110009603268
  • NII書誌ID
    AA00607148
  • DOI
    10.11362/jcssjclayscience.17.1_1
  • ISSN
    21863555
    00098574
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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