US 11,931,722 B2
Preparation method for carbon dioxide capture agent, and application thereof
Haijun Yu, Foshan (CN); Aixia Li, Foshan (CN); Yinghao Xie, Foshan (CN); Xuemei Zhang, Foshan (CN); Yingsheng Zhong, Foshan (CN); and Changdong Li, Foshan (CN)
Assigned to GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Foshan (CN); HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Changsha (CN); and HUNAN BRUNP EV RECYCLING CO., LTD., Changsha (CN)
Appl. No. 18/259,993
Filed by GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Foshan (CN); HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Changsha (CN); and HUNAN BRUNP EV RECYCLING CO., LTD., Changsha (CN)
PCT Filed Aug. 22, 2022, PCT No. PCT/CN2022/112238
§ 371(c)(1), (2) Date Jun. 29, 2023,
PCT Pub. No. WO2023/071410, PCT Pub. Date May 4, 2023.
Claims priority of application No. 202111270651.9 (CN), filed on Oct. 29, 2021.
Prior Publication US 2024/0050926 A1, Feb. 15, 2024
Int. Cl. B01D 53/22 (2006.01); B01D 53/02 (2006.01); B01J 20/22 (2006.01); B01J 20/32 (2006.01)
CPC B01J 20/3202 (2013.01) [B01D 53/02 (2013.01); B01J 20/22 (2013.01); B01J 20/3217 (2013.01); B01J 20/3244 (2013.01); B01D 2253/20 (2013.01); B01D 2257/504 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A preparation method of a carbon dioxide capture agent, comprising the following steps of:
S1: mixing a graphite dispersion, an organic acid solution, a metal salt solution and a silica sol to obtain an organic-inorganic composite gel;
S2: subjecting the organic-inorganic composite gel to standing, aging and drying and then carbonizing the same by microwave in a mixed atmosphere of inert gas and sulfur dioxide to obtain an intermediate product; and
S3: subjecting the intermediate product to acid washing or alkali washing to obtain a defective carrier, then mixing the defective carrier with an amine substance for ultrasonic treatment and drying to obtain the carbon dioxide capture agent.