Method for the high-throughput preparation of carbon nanotube hollow fiber membranes
US-10179314-B2 · Jan 15, 2019 · US
Gas separation membrane and gas separation membrane module
US12478926B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12478926-B2 |
| Application number | US-202118029286-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 28, 2021 |
| Priority date | Oct 5, 2020 |
| Publication date | Nov 25, 2025 |
| Grant date | Nov 25, 2025 |
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Abstract
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A gas separation membrane including a separation functional layer in at least part thereof, the gas separation membrane having a fibrous shape or film-like shape, the separation functional layer including a matrix and particles. Provided are a gas separation membrane and a gas separation membrane module capable of preventing breakage of the gas separation membrane during the operation, and allowing long-term stable production of excellent permeation and separation properties.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A gas separation membrane comprising a separation functional layer in at least part thereof, wherein the gas separation membrane has a fibrous shape or film shape, wherein the separation functional layer comprises a matrix and particles, wherein the matrix is a carbide of a macromolecular compound, wherein the particles at least partially include particles having an aspect ratio of not less than 10, and wherein an orientation coefficient F, with respect to a reference axis, of the particles having an aspect ratio of not less than 10, is +0.1 to +1.0. 2 . The gas separation membrane according to claim 1 , wherein the particles have a fibrous shape. 3 . The gas separation membrane according to claim 1 , wherein the particles have a flat shape. 4 . The gas separation membrane according to claim 1 , wherein a content of the particles in the separation functional layer is not more than 10 vol %. 5 . The gas separation membrane according to claim 1 , wherein a volume ratio of the particles present independently without being in contact with other particles is not less than 1 vol % to a total volume of all particles. 6 . The gas separation membrane according to claim 1 , wherein the matrix has a ratio of the number of carbon elements of 70 atomic % to 100 atomic %; and when the ratio of the number of carbon elements in the matrix is X (atomic %), and the ratio of the number of carbon elements in the particles is Y (atomic %), (|X−Y|/X)×100 is not more than 30%. 7 . The gas separation membrane according to claim 1 , wherein the particles are one or more selected from the group consisting of carbon black, graphite, expanded graphite, carbon nanohorns, carbon nanoribbons, carbon nanotubes, graphene, graphene oxide, and fullerene. 8 . A gas separation membrane module having a form in which the gas separation membrane according to claim 1 is placed in a case.
Assignees
Inventors
Classifications
- B01D69/08Primary
Hollow fibre membranes (manufacture of hollow fibres D01D5/24, D01F1/08) · CPC title
containing dispersed material in a continuous matrix · CPC title
Carbon, carbon nanotubes, graphene or derivatives thereof · CPC title
Inorganic support material · CPC title
Laminated layers · CPC title
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- What does patent US12478926B2 cover?
- A gas separation membrane including a separation functional layer in at least part thereof, the gas separation membrane having a fibrous shape or film-like shape, the separation functional layer including a matrix and particles. Provided are a gas separation membrane and a gas separation membrane module capable of preventing breakage of the gas separation membrane during the operation, and allo…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification B01D69/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 25 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).