Toray Industries, Inc.

Dai Kondo

Tomoyuki Horiguchi

Takaaki Mihara

Kosaku Takeuchi

Kentaro Tanaka

Yuki Yamashita

An object of the present invention is to suppress a defect in a carbon membrane for fluid separation use with a dense carbon layer formed on a porous carbon support. The present invention is a carbon membrane for fluid separation use, including a dense carbon layer formed on a porous carbon support, wherein X<Y when the ratio of the content of silicon atoms to the total content of carbon atoms and silicon atoms at the center position in the membrane thickness direction of the porous carbon support is X (atomic %), and the ratio of the content of silicon atoms to the total content of carbon atoms and silicon atoms at the position of 3 μm from the interface between the porous carbon support and the dense carbon layer to the porous carbon support side is Y (atomic %).

Carbon membrane for fluid separation use

The present invention provides a porous carbon fiber which has an excellent permeation amount and excellent pressure resistance, which is prevented from the occurrence of detachment or cracking at an interface, and which can exhibit excellent properties needed for use as a support for a fluid separation membrane. The present invention is a porous carbon fiber having a bicontinuous porous structure, wherein the average value Rof the R value of the outer surface and the R value of the inside is 1.0 or more and 1.8 or less, the absolute value &#x394;R of the difference between the R value of the outer surface and the R value of the inside is 0.05 or less, and R value is a carbonization progression degree calculated from a Raman spectrum in accordance with the following formula:value=(intensity of scattering spectrum at 1360 cm)/(intensity of scattering spectrum at 1600 cm).

Porous carbon fiber and fluid separation membrane

The present invention provides a carbon membrane for fluid separation that can suppress the breakage of a carbon membrane installed in a separation module during a vacuum desorption step before permeation of a fluid or during permeation of a fluid. The present invention provides a carbon membrane for fluid separation including a porous carbon support and a dense carbon layer provided on the porous carbon support, wherein the porous carbon support has an Rvalue of 1.0 or less, where the Rvalue is an R value (peak intensity of D-band (1360 cm)/peak intensity of G-band (1580 cm)) calculated from a Raman spectrum.

Carbon membrane for fluid separation and method for manufacturing the same

A fluid separation membrane has high compression strength in the fiber cross-section direction (direction orthogonal to the fiber axis). The fluid separation membrane is obtained by an organic polymer layer being formed on the surface of porous carbon fibers having a co-continuous porous structure. A fluid separation membrane module and porous carbon fibers having a fully co-continuous porous structure are also disclosed.

Growing community of inventors

Otsu, Japan

Dai Kondo