Ngk Insulators, Inc.

Aya Satoh

Nobuhiko Mori

Masaaki Kawai

Kenichi Noda

Toshihiro Tomita

Mariko Takagi

There is provided a silica membrane filter having performance of selectively separating an aromatic compound and performance of selectively separating an alcohol. The silica membrane filter is provided with a porous substrate and a silica membrane. The ratio of a He gas permeation amount to an Ngas permeation amount (He gas permeation amount/Ngas permeation amount) is 7 or less, and the ratio of the Ngas permeation amount to a SFgas permeation amount (Ngas permeation amount/SFgas permeation amount) is 1.5 or more.

Silica film filter and process for producing silica film filter

There is provided a zeolite separation membrane-provided article having gaps or pores larger than pores inherent to zeolite crystals and controlled within an appropriate range and being capable of achieving both high permeability and high separability for components with small difference in adsorption properties or a component having a smaller molecular diameter than the diameter of the pores, a method for producing the same, a method for separating mixed fluids, and a device for separating mixed fluids. The zeolite separation membrane-provided article is provided with a zeolite membrane having an Ngas permeation speed at room temperature of 1.0&#xd7;10mol&#xb7;m&#xb7;s&#xb7;Paor more and a permeation speed ratio of 1,3,5-trimethylbenzene/Nat room temperature of 0.17 or more and being free from dyeing caused by the impregnation with Rhodamine B.

Structure provided with zeolite separation membrane, method for producing same, method for separating mixed fluids and device for separating mixed fluids

A method for producing a carbon membrane of the present invention is a production method where a carbon membrane obtained by subjecting a carbon-containing layer to thermal decomposition in an oxygen inert atmosphere while sending a gas mixture containing an oxidizing gas thereinto is thermally heated. The carbon membrane is subjected to a heating oxidation treatment with controlling the ratio of the flow rate of the gas mixture to the areas of the carbon membrane to 0.5 cm/min. or more to control (temperature &#xb0; C.)&#xd7;time (h)/10000, which is the relation between the temperature of the gas mixture and the flow time, to 9 to 32. This enables to obtain a carbon film which selectively separates alcohols having 2 or less carbon atoms from a liquid mixture of the alcohols having 2 or less carbon atoms and organic compounds having 5 to 9 carbon atoms.

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Nagoya, Japan

Aya Satoh