IP Library › Granted Patent US 12,201,937
Granted Patent B2
US 12,201,937 · App. 17/051,704 · Granted Jan 21, 2025

Hybrid polymer membrane

Inventors: Marius Sandru (Trondheim, NO); Eugenia Mariana Sandru (Trondheim, NO); Per Martin Stenstad (Trondheim, NO)
Assignee: SINTEF TTO AS
B01D53/228B01D53/62B01D53/85B01D67/0006B01D67/0088B01D67/0093B01D69/02B01D69/06B01D69/12B01D69/125B01D69/144B01D71/381B01D71/40B01D71/82C02F3/342B01D2257/504B01D2258/0283B01D2258/05B01D2258/06B01D2323/345B01D2323/385B01D2325/36C02F2101/10C02F2103/20
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Quick Facts
Patent No.
US 12,201,937
App. No.
17/051,704
Granted
Jan 21, 2025
Kind
B2
Abstract

The present invention relates to CO 2 capture from gas mixtures by use of gas separation membranes. In particular, the invention relates to a gas separation membrane comprising: a gas permeable or porous support layer; and at least one CO 2 selective polymer layer comprising carbonic anhydrase (CA) enzymes fixed within the at least one CO 2 selective polymer layer. The present invention also relates to the method of separating CO 2 from a gas and to the use of the gas separation membrane.

Claims (11)

1. A gas separation membrane comprising:

a dense gas permeable support layer or porous support layer; and

at least one CO 2 selective polymer layer comprising carbonic anhydrase (CA) enzymes fixed within the at least one CO 2 selective polymer layer, wherein the at least one CO 2 selective polymer layer is a biopolymer layer formed by copolymerisation of chemically modified CA enzymes and monomers; and wherein the at least one CO 2 selective polymer layer is based on a hydrophilic polymer.

2. The gas separation membrane according to claim 1 , where the at least one CO 2 selective polymer layer further comprises amine groups.

3. The gas separation membrane according to claim 1 , wherein the CA enzymes are thermostable enzymes resistant to temperature of at least 50° C.

4. The gas separation membrane according to claim 1 , wherein the hydrophilic polymer is selected from polyvinyl alcohol, polyacrylamide, polyvinyl amide, alginate, chitosan and polyvinyl amine.

5. The gas separation membrane according to claim 1 , further comprising a protective layer made of high gas and water vapour permeability material coated on top of the CO2 selective polymer layer.

6. The gas separation membrane according to claim 1 , wherein the at least one CO 2 selective polymer layer has a thickness in the range from 0.1 to 10 μm.

7. The gas separation membrane according to claim 1 , wherein the at least one CO 2 selective polymer layer has multilayer structure formed by at least two layers of the CA enzyme modified polymer layers.

8. The gas separation membrane according to claim 6 , wherein the CO 2 selective polymer layer has a thickness in the range from 0.1 to 5 μm.

9. The gas separation membrane according to claim 1 , wherein the at least one CO 2 selective polymer layer has multilayer structure formed by at least a CA enzyme modified polymer layer and an amine-containing polymer layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 17, 2021
From: SANDRU, MARIUS; SANDRU, EUGENIA MARIANA; STENSTAD, PER MARTIN
To: SINTEF TTO AS
Reel/Frame 055292/0829 →
Priority Claims (1)
NO 20180621 · Apr 30, 2018 · national
Continuity (1)
Related Publication 20210229031A1 · Jul 29, 2021
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