National Institute of Advanced Industrial Science and Technology

Nobuo Hara

Hiroyuki Suda

Shigeki Hara

Masakazu Mukaida

Kenji Haraya

Miki Yoshimune

An object of the present invention is to provide a method capable of easily controlling the permeation rate and the selectivity of gas molecules, in a hollow fiber carbon membrane which can be used as a gas separation membrane. The present invention provides a method of producing a hollow fiber carbon membrane, the method including: a preparation step of preparing a precursor made of an organic polymer compound in the form of a hollow fiber; a preheating step of heating the precursor to a temperature of 150&#xb0; C. to 400&#xb0; C. in an atmosphere containing an oxygen gas; and a carbonization step of heating the precursor which has been subjected to the preheating step to a temperature of 450&#xb0; C. to 850&#xb0; C., thereby carbonizing the precursor; wherein the carbonization step includes heating the precursor in the presence of a hydrocarbon gas which may contain a nitrogen atom and which has from 1 to 8 carbon atoms. This method allows for easily controlling the permeation rate and the selectivity of gas molecules, in the resulting hollow fiber carbon membrane.

Method for producing hollow fiber carbon membrane and separation membrane module

An apparatus for evaluating gas barrier properties, containing a polymer-containing support for supporting a sample, a chamber on a permeation side, and a detection unit, in which the support is connected with an opening of the chamber on the permeation side, and in which glass transition point of the polymer contained in the support is 100&#xb0; C. or higher.

Apparatus and method for evaluating gas barrier properties

An apparatus for evaluating gas barrier properties, containing a support () for supporting a sample, a chamber on a permeation side, and a detection unit, in which the support is connected with an opening of the chamber on the permeation side, and in which water vapor-transmission rate of the support is 1&#xd7;10mol/msPa to 1&#xd7;10mol/msPa.

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Tsukuba, Japan

Nobuo Hara