Reactive synthesis of porous MgAl₂O₄ membranes on a macroporous Al₂O₃-based ceramic tube toward cross-flow ultrafiltration

• KAMATO Yoko

  Graduate School of Pure and Applied Sciences, University of Tsukuba

• SUZUKI Yoshikazu

  Graduate School of Pure and Applied Sciences, University of Tsukuba Faculty of Pure and Applied Sciences, University of Tsukuba

抄録

Porous ceramic filters made of MgAl₂O₄ spinel are promising due to their excellent thermal and chemical stability. In this study, toward future cross-flow ultrafiltration applications, reactive synthesis of porous MgAl₂O₄ membranes on a macroporous Al₂O₃-based ceramic tube has been examined. Fine (0.2 µm) and coarse (0.7 µm) α-Al₂O₃ powders and two types of MgO sources, i.e., MgO (∼2.8 µm) and MgCO₃ (basic) [hydromagnesite Mg₅(CO₃)₄(OH)₂·4H₂O] (∼5.5 µm) powders were used as starting materials for the reactive synthesis of porous MgAl₂O₄ membranes. For the intermediate layer, MgCO₃ (basic) powder was favorable as a MgO source because it can clog up the large (15 µm) pores in the Al₂O₃-based tube. Meanwhile, for the top layer, MgO powder with finer particle size was favored to obtain homogeneous layer for ultrafiltration.

収録刊行物

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 127 (4), 267-271, 2019-04-01

  公益社団法人 日本セラミックス協会

キーワード

• MgAl₂O₄ spinel
• Dip-coating
• Filter
• Al₂O₃
• Ultrafiltration

詳細情報

• CRID: 1390282763120743168
• NII論文ID: 130007622353
• NII書誌ID: AA12229489
• DOI: 10.2109/jcersj2.18202
• ISSN: 13486535
• ISSN: 18820743
• HANDLE: 2241/00157291
• Web Site: https://tsukuba.repo.nii.ac.jp/records/51860
• Web Site: https://www.jstage.jst.go.jp/article/jcersj2/127/4/127_18202/_pdf
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可