MEMBRANE
Online ISSN : 1884-6440
Print ISSN : 0385-1036
ISSN-L : 0385-1036
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Volume 38, Issue 1
Displaying 1-9 of 9 articles from this issue
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Foreword
Special Topic :Permeation Model through Subnanoporous Membranes and Pore Size Evaluation based on Normalized Knudsen-based Permeance (NKP)
  • Permeation Model through Subnanoporous Membranes and Pore Size Evaluation based on Normalized Knudsen-based Permeance (NKP)
    Toshinori Tsuru
    2013 Volume 38 Issue 1 Pages 2-8
    Published: 2013
    Released on J-STAGE: May 12, 2013
    DOIhttps://doi.org/10.5360/membrane.38.2
    JOURNAL RESTRICTED ACCESS
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    Viscous flow, Knudsen diffusion, and surface diffusion models are commonly accepted in diffusion inside porous materials and permeation through porous membranes, including polymeric and inorganic materials. However, the permeation equation through subnano?porous membranes is still under discussion. In this contribution, permeation models of gaseous molecules through porous membranes, including gas translation model (GT model) and uniform potential model, are summarized, and then the modified GT model that was recently proposed, was introduced. In addition, Normalized Knudsen?based Permeance (NKP), which was theoretically derived based on the modified GT model, was introduced to the evaluation of pore sizes of porous membranes with sub?nanometer in size.
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