IP Library › Granted Patent US 12,702,966
Granted Patent B2
US 12,702,966 · App. 18/376,245 · Granted Aug 11, 2026

Supported poly(allyl)amine and derivatives for CO

Inventors: Ratayakorn Khunsupat (Smyrna, GA); Christopher W. Jones (Atlanta, GA); Sumit Bali (Atlanta, GA)
Assignee: Georgia Tech Research Corporation
B01J20/262B01D53/02B01D53/62B01J20/08B01J20/103B01J20/28042B01J20/28083B01J20/3204B01J20/3272B01J20/3282B01D2253/202B01D2253/25B01D2257/504B01D2258/0283Y02A50/20Y02C20/40
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Quick Facts
Patent No.
US 12,702,966
App. No.
18/376,245
Filed
Oct 3, 2023
Granted
Aug 11, 2026
Kind
B2
Art Unit
1736
USPC
423/228
Abstract

Supported amine polymer adsorbents based on polymers containing only or primarily primary amines sites are to be used as regenerable adsorbents for CO 2 capture from ultra-dilute gas streams, such as ambient air, or from mixtures of gases containing preferably at least 10% oxygen. and can also be useful for use at the moderate gas pressures found in typical post-combustion capture processes, such as flue gas from large point sources such as coal-fired power plants. Preferred supported solid amine adsorbents of this invention are based on poly(allylamine) (“PAA”) and poly(vinyl amine) (“PVAm”), both of which are linear polymers, and their derivatives, containing substantially all primary amine groups, supported on substrates. Preferred such substrates include silica mesocellular foam (MCF) and mesoporous-.gamma.-alumina, as well on mesoporous-.gamma.-alumina coated throughout the pores of MCF, most preferably of monolithic structure. Preferred derivatives include the guanidinylated and cross-linked poly(allylamine) materials.

Claims (5)

1 . A supported adsorbent comprising a porous substrate on and in which is infused an active adsorbent for CO 2 selected from the group consisting of poly(allylamine), cross-linked poly(allylamine) with epichlorhydrin and guanidinylated poly(allylamine), wherein the porous substrate is silica mesocellular foam in monolithic shape.

2 . The supported adsorbent of claim 1 , wherein the active adsorbent has a weight average molecular weight of not greater than about 5000 Daltons.

3 . The supported adsorbent of claim 1 , wherein the active adsorbent is poly(allylamine), having a weight average molecular weight of not greater than about 3000 Daltons.

4 . The supported adsorbent of claim 1 , wherein the active adsorbent is the cross-linked poly(allylamine) with epichlorhydrin which comprises a cross-linked poly(allylamine) cross-linked with epichlorhydrin.

5 . The supported adsorbent of claim 1 , wherein the weight average molecular weight of the active adsorbent, is in the range of from about 500 to about 2200 Daltons.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 4, 2024
From: JONES, CHRISTOPHER W.; BALI, SUMIT; KHUNSUPAT, RATAYAKORN
To: GEORGIA TECH RESEARCH CORPORATION
Reel/Frame 066022/0197 →
Continuity (4)
Division 17373759 · Jul 12, 2021
Division 14063850 · Oct 25, 2013
Provisional Application 61718267 · Oct 25, 2012
Related Publication 20240024849A1 · Jan 25, 2024
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