Synthesis and Pervaporation Performances of Merlinoite and Phillipsite Membraneson Mullite Tube

• NAGASE TAKAKO

  AIST Research Center for Compact Chemical Process

• KIYOZUMI YOSHIMICHI

  AIST Research Center for Compact Chemical Process

• HASEHAWA YASUHISA

  AIST Research Center for Compact Chemical Process

• MIZUKAMI FUJIO

  AIST Research Center for Compact Chemical Process

抄録

For the purpose of screening of zeolite membranes, which are highly resistant to acid, merlinoite (MER) and phillipsite (PHI) membranes were synthesized for the first time, and pervaporation (PV) performance of those membranes were evaluated using 5-95wt% ethanol solution. Each zeolitemembrane was synthesized on a mullite tube by secondary growth of seed crystals, which were rubbedon the outer surface of the tube. The permeance of pure N₂ through those membranes was below1.4×10^-9mol/m²/Pa/s at 50°C. By SEM observation, the thickness of the membrane was 10-50μm. InPV performance, each membrane showed hydrophilic behavior. When ethanol concentration was 90wt% in the feed solution, the permeation fluxes (Q) of the MER and PHI membranes were 0.8-1.1kg/m²/h at 75°C. The water/ethanol separation factor (°) was over 10, 000 for MER membrane. In the evaluation of stabilities of the zeolite against acid, the changes in the XRD pattern and the compositionof MER and PHI were much smaller in comparison with the case of FAU and CHA. Thus, it can beexpected to use MER and PHI membranes for dehydration directly from the acid solutions likebiomass.

収録刊行物

• Ｃｌａｙ　Ｓｃｉｅｎｃｅ

  Ｃｌａｙ　Ｓｃｉｅｎｃｅ 12 (Supplement2), 100-105, 2006

  一般社団法人 日本粘土学会

キーワード

• Merlinoite
• Phillipsite
• Chabazite
• Pervaporation
• Membrane
• Water/ethanol selectivity

詳細情報

• CRID: 1390282679090001664
• NII論文ID: 110004867665
• NII書誌ID: AA00607148
• DOI: 10.11362/jcssjclayscience1960.12.supplement2_100
• ISSN: 21863555
• ISSN: 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