文献类型：期刊文献

英文题名：Instant Interlayer Restoration Strategy for Lithium Adsorption Engineering Enhancement in Sulfate-type Brines

作者：Chen, Jun[1,2];Lin, Sen[1,2];Yu, Jianguo[1,3]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake Re, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Engn Res Ctr Salt Lake Resources Proc Engn, Minist Educ, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China

年份：2024

卷号：16

期号：27

起止页码：34850

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20242716605149);WOS:【SCI-EXPANDED(收录号:WOS:001259914100001)】；

语种：英文

外文关键词：Li/Al-LDHs; lithium extraction; sulfate-typebrine; anion exchange; cyclic performance

摘要：It was confirmed that the detrimental effect of SO42- on Li+ desorption and readsorption intensified with the increase of the SO42-/Cl- ratio, resulting in application limitations of aluminum-based adsorbent (Li/Al-LDHs) in sulfate-type brines. Based on the interlayer anion exchangeability of Li/Al-LDHs, a one-step interlayer restoration strategy was designed with the assistance of molecular dynamics to rapidly substitute the intercalated SO42- with preferentially desorbed Cl-, aiming to fundamentally address the damage to the cycling performance. The strategy effectiveness was verified by the restored adsorption and desorption capacities in various sulfate-type brines. Furthermore, enhanced lithium extraction processes for sulfate-type brines were established and showed universal applicability for complex brines with different compositions during fixed-bed cycles. By regulating the implementation frequency, the Li+ extraction efficiency was improved, in which the extraction amount per unit time could increase by more than 100% compared with the conventional process.