Effect of oxidation on gas permeation of carbon molecular sieving membranes based on BPDA-pp'ODA polyimide

研究成果: ジャーナルへの寄稿学術誌査読

77 被引用数 (Scopus)

抄録

A BPDA-pp'ODA polyimide film was formed on the outer surface of a porous alumina support tube and was then carbonized in an inert atmosphere at 600-900 °C. The resulting carbon molecular sieving (CMS) membranes were oxidized in O2-N2 mixtures at 300 °C or in CO2 at 800-900 °C, and the permeation properties were determined. The O2 oxidation increased both permeances and permselectivities. The CMS membranes were exposed to air at 100 °C for 1 month, and their resistance to oxidation was determined. The results show that permeance was decreased in the initial stage of exposure, while permselectivity was increased. Both properties were largely restored by heat-treatment in nitrogen at 600 °C for 1-4 h. This suggests that CMS membranes would be stable at 100 °C for months, when used in an atmosphere which contained only a small fraction of oxidants.

本文言語英語
ページ(範囲)2134-2140
ページ数7
ジャーナルIndustrial and Engineering Chemistry Research
36
6
DOI
出版ステータス出版済み - 1997

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 化学工学(全般)
  • 産業および生産工学

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