Mesoporous Carbon Membranes with Controlled Pore Diameters

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  • Yoshimune Miki
    Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology（AIST）
  • Haraya Kenji
    Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology（AIST）

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Other Title
  • メソ細孔制御ポーラスカーボン膜の創製
  • メソサイコウ セイギョ ポーラス カーボン マク ノ ソウセイ

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Description

This paper reports the preparation of mesoporous carbon membranes by the pyrolysis of mesoporous aerogel membranes fabricated from a resorcinol-formaldehyde (RF) aqueous solution. The nitrogen adsorption-desorption measurement shows that the RF carbon membranes possess a well-developed mesoporous structure with a BET surface area of over 400 m2 g–1. In addition, mesopore diameters of RF carbon membranes can be controlled from 3.3 nm to 14 nm by changing the molar ratio of resorcinol to catalyst (R/C) from 100 to 400. The helium permeances of RF carbon membranes were independent of the feed pressure, indicating that there was no contribution of viscous flow to the total permeation. This result supports that the obtained RF carbon membranes are initially pinhole free. The permeation of H2, He, CH4, N2, CO2 and CF4 through the RF carbon membranes was predominantly governed by Knudsen diffusion.

Journal

  • MEMBRANE

    MEMBRANE 32 (6), 325-331, 2007

    THE MEMBRANE SOCIETY OF JAPAN

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