US 12,220,683 B2
Amine-functionalized adsorbent and method for preparing same
Zuotai Zhang, Guangdong (CN); Feng Yan, Guangdong (CN); Xin Sun, Guangdong (CN); and Jiyun Xu, Guangdong (CN)
Assigned to DECARBON TECHNOLOGY (SHENZHEN) CO., LTD., Guangdong (CN)
Filed by DeCarbon Technology (Shenzhen) Co., Ltd., Guangdong (CN)
Filed on Apr. 3, 2024, as Appl. No. 18/625,799.
Claims priority of application No. 202310695411.6 (CN), filed on Jun. 12, 2023.
Prior Publication US 2024/0408570 A1, Dec. 12, 2024
Int. Cl. B01J 20/22 (2006.01); B01J 20/28 (2006.01); B01J 20/32 (2006.01)
CPC B01J 20/226 (2013.01) [B01J 20/28066 (2013.01); B01J 20/28076 (2013.01); B01J 20/3285 (2013.01)] 10 Claims
 
1. A method for preparing an amine-functionalized adsorbent,
wherein the amine-functionalized adsorbent comprises a metal-organic framework (MOF) material and polymeric amine, the crystal structure of the MOF material is a three-dimensional cage-like pore structure, and the polymeric amine is loaded inside the three-dimensional cage-like pore structure;
the method comprising adding the MOF material and the polymeric amine into a second solvent, reacting through physical impregnation, and drying to obtain the amine-functionalized adsorbent;
wherein the MOF material and the polymeric amine are mixed under the ultrasonic condition, the ultrasonic time is 10 min-60 min, the ultrasonic frequency is 10 KHz-60 KHz, and the ultrasonic power is 50 W-500 W;
the viscosity of the amine-functionalized adsorbent is 100 mPa·s-1000 mPa·s;
the relative molecular mass of the polymeric amine is 800-5000;
the polymeric amine is a combination of polyethylene imine, or a combination of two different polyethyleneimines, or a combination of two different polypropylene amines, or a combination of polyethylene imine and polypropylene amine; and
the reaction temperature is 30° C.-90° C.