Highly selective oxygen transport through a cobalt porphyrin liquid membrane

Xue Si Chen, Hiroyuki Nishide*, Kenichi Oyaizu, Eishun Tsuchida

*この研究の対応する著者

研究成果: Article査読

11 被引用数 (Scopus)

抄録

The facilitated transport of oxygen in a liquid membrane containing [meso-α,α,α,α-tetrakis(o-pivalamidophenyl) porphyrinatocobalt(II)]-laurylimidazole (CoP) as an oxygen carrier leads to high permeability and permselectivity of oxygen against nitrogen. The oxygen permeation was properly analyzed by a dual-mode model and using the oxygen-binding constants spectroscopically determined, to give permeation parameters of the membrane such as the diffusion coefficient (DCoP) of the CoP mobile carrier and the physical diffusion coefficient of oxygen. DCoP was in accordance with that electrochemically determined. The facilitated permeation was represented by the product of the CoP concentration and DCoP in the membrane solution. DCoP decreased with solution viscosity and increased with the measured temperature. High oxygen permeability (10-7 cm3(STP) cm cm-2 s-1 cmHg-1) was observed, e.g. for the membrane of the 31 wt % CoP methylanisole solution at 10 °C, where the facilitation factor and the oxygen/nitrogen permselectivity were over 20 and 40, respectively.

本文言語English
ページ(範囲)5725-5729
ページ数5
ジャーナルJournal of Physical Chemistry B
101
29
出版ステータスPublished - 1997 7 17

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

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