	US 11,986,794 B1
	Preparation method for and use of lithium silicate-based adsorbent
Yingsheng Zhong, Guangdong (CN); Haijun Yu, Guangdong (CN); Yinghao Xie, Guangdong (CN); Aixia Li, Guangdong (CN); Jianfeng Xu, Guangdong (CN); and Changdong Li, Guangdong (CN)
Assigned to GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Guangdong (CN); HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Hunan (CN); and HUNAN BRUNP EV RECYCLING CO., LTD., Hunan (CN)
Appl. No. 18/284,757
Filed by GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Guangdong (CN); HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Hunan (CN); and HUNAN BRUNP EV RECYCLING CO., LTD., Hunan (CN)
PCT Filed Nov. 10, 2022, PCT No. PCT/CN2022/131107 § 371(c)(1), (2) Date Sep. 28, 2023, PCT Pub. No. WO2023/130830, PCT Pub. Date Jul. 13, 2023.
Claims priority of application No. 202210009516.7 (CN), filed on Jan. 5, 2022.
Int. Cl. B01J 20/10 (2006.01); B01J 20/30 (2006.01); C02F 1/28 (2023.01); C02F 101/10 (2006.01); C02F 103/34 (2006.01)

CPC B01J 20/10 (2013.01) [B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); C02F 1/281 (2013.01); C02F 2101/10 (2013.01); C02F 2103/34 (2013.01)]

20 Claims

1. A preparation method of a lithium-silicate-based adsorbent, comprising the following step of:

S1: mixing and stirring butyl methacrylate, an acid and an organic solvent to obtain a first solution, adding lithium silicate, an initiator and N,N′-methylene bisacrylamide into the first solution, heating and stirring a resulting mixture for reaction to obtain a second solution, and subjecting the second solution to low-temperature dehydration, cooling and drying to obtain a lithium-silicate-based polymer; and

S2: mixing the lithium-silicate-based polymer with a third solution, and carbonizing a resulting mixture at low temperature under an anoxic condition to obtain a lithium-silicate-based adsorbent, wherein the third solution is obtained by mixing a cotton fiber, a tartaric acid and a carboxymethyl cellulose with water.