We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
吡啶类离子液体体系对模拟盐湖 老卤中锂的萃取研究.
- Authors
卢娜娜; 秦亚茹; 马淑清; 王琪慧; 刘 兵; 石成龙
- Abstract
The [BPy][PF6 ]-TBP-C2H4Cl2 extraction system was constructed by using tributyl phosphate (TBP) as extractant, N-butyl pyridine hexafluorophosphate([BPy] [PF6]) as coextract ant, and dichloromethane (C2H4Cl2) as diluent to separate lithium ions in salt lake brine. The effects of water phase acidity, ionic liquid concentration, TBP concentration, and other factors on the lithium extraction efficiency were investigated by single factor experiments. The results showed that the optimal conditions of the extraction system were as follows the concentration of ionic liquid was 0.3 mol/L, the volume fraction of TBP was 60%, and the ratio of O/A was 2.5/1.Under these conditions, single⁃stage extraction efficiency of 91.65% for Li+ and 5.86% for Mg2+ were obtained, and this extraction system showed good selectivity for Li+ .The thermodynamic study showed that the extraction reaction of lithium ions by the ionic liquid system was a spontaneous exothermic reaction. This experimental study provided a certain basis and reference for the extraction and separation of lithium ions in the ionic liquid system.
- Subjects
LITHIUM ions; EXOTHERMIC reactions; TRIBUTYL phosphate; WATER acidification; SALT lakes; LIQUID-liquid extraction
- Publication
Inorganic Chemicals Industry, 2023, Vol 55, Issue 7, p45
- ISSN
1006-4990
- Publication type
Article
- DOI
10.19964/j.issn.1006-4990.2022-0556