JOURNAL OF MOLECULAR LIQUIDS
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2022
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IF 6.633
Xiaohua Jing,Zhumei Sun,Dandan Zhao,Xiaoning Tang,Wenjing Lv,Yunfeng Shi
In this study, five novel ionic liquids denoted by [RNH 3 ][Cyanex 272] where R = C 4 H 9 , C 6 H 13 , C 8 H 17 , C 10 H 21, and C 12 H 25 were synthesized in a one-step reaction of straight-chain primary amines and Cyanex 272. The singe-stage extraction performance of [RNH 3 ][Cyanex 272] for the separation of Mn 2+ , Co 2+ , Ni 2+ and Li + was investigated. Compared with the other [RNH 3 ][Cyanex 272], the [C 4 H 9 NH 3 ][Cyanex 272] has good selective extraction and separation of Mn 2+ , Co 2+ , and Ni 2+ due to the smaller different value between the radius of metal ion and the radius of [C 4 H 9 NH 3 ] + . Using a three-stage cross flow extraction, the extraction percentages of Mn 2+ , Co 2+ , Ni 2+ , and Li + were about 99.4, 99.1, 14.9 and 0.9 %. The [C 4 H 9 NH 3 ][Cyanex 272] is a good extraction agent for co-extraction of Mn 2+ , Co 2+ , and a part of Ni 2+ from Li + based on a three-stage cross flow extraction. Diluted sulfuric acid was used to strip the organic phase containing Mn 2+ , Co 2+ , and Ni 2+ , and the aqueous phase containing Mn 2+ , Co 2+ , and Ni 2+ can be used for the preparation of ternary precursor materials. The precipitation method can be used to prepare Ni(OH) 2 and Li 2 CO 3 from an aqueous phase containing Ni 2+ and Li + . The conceptual recycling flow-sheet for Mn 2+ , Co 2+ , Ni 2+ , and Li + from spent ternary lithium batteries was presented on basis of the new extraction agent. The slope method was also used to investigate the mechanism of the extractive reaction of Mn 2+ , Co 2+ , and Ni 2+ using the [C 4 H 9 NH 3 ][Cyanex 272].
研究领域:
化学工程
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材料科学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2021
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IF 8.198
Kang Wang,Tianyou Hu,Penghui Shi,Yulin Min,Junfeng Wu,Qunjie Xu
The advancement of the electric vehicle industry has inevitably resulted in the increased production and numerous scraps of lithium-ion batteries (LIBs), among which the nickel cobalt manganese ternary material has become the fastest growing and largest proportion material in the lithium battery cathode material market. Therefore, a practical and effective method to recycle spent LIBs must be established. In this study, an efficient recycling method was proposed to leach value metals from cathode materials via the excellent solubility of deep eutectic solvents to metals, and regenerated LiNi1/3Co1/3Mn1/3O2 was prepared via coextraction and coprecipitation. 91.63% of Li, 92.52% of Co, 94.92% of Ni, and 95.47% of Mn are leached from the recycled cathode electrode. The kinetic experiments indicated that the leaching process fitted well to the shrinking core model controlled by chemical reactions. The value metals could be extracted with high efficiencies by adjusting the operating parameters in the step of coextraction. Moreover, the electrochemical tests of the regenerated ternary material revealed that the material had an excellent electrochemical performance. The proposed method, which can realize the sustainable development of spent LIBs, has great potential in the deep recycling of spent LIBs.
研究领域:
材料科学
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环境工程
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电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Huiling Huang,Xi Lin,Wenwen Li,Fuzhen Liu,Jing Gao
Haematococcus pluvialis ( H. pluvialis) is rich in bioactive compounds. Traditional microemulsions (ME) can efficiently solubilize multipolar constituents, while fail to separate target products. In this study, a novel microemulsion (ME) composed of ionic liquid-based deep eutectic solvents (DES) was developed for multi-component extraction from H. pluvialis . The ME exhibited temperature-responsive UCST behavior, forming stable nanoparticles at 30 °C and demulsifying at 4 °C due to weakened intermolecular interactions and enhanced hydration effects at lower temperatures. Microstructure analysis revealed bicontinuous ME optimized co-extraction of hydrophobic and hydrophilic compounds. As compared with IL-based ME and conventional solvents, DES-ME achieved higher extraction efficiencies (carotenoids: 111.3 mg/g, lipids: 313.6 mg/g, proteins: 150.1 mg/g, carbohydrates: 26.98 mg/g). Post-extraction, cooling-enabled demulsification facilitated selective separation: carotenoids and lipids partitioned into the DES-rich phase (logK >0) due to strong CH-π/O interactions, while proteins migrated to the water-rich phase. DES-based ME significantly enhanced storage stability, delaying carotenoid degradation by encapsulating pigments in hydrophobic cores (ΔE = 7.89 vs. 9.71 for IL-based ME). The extract exhibited potent bioactivity of DPPH scavenging >95 % and exceptional antimicrobial effects against E. coli . Environmental assessment (GAPI score: 88) confirmed low toxicity, recyclability, and energy efficiency, positioning DES-based ME as a sustainable, high-performance alternative for extraction applications.
研究领域:
植物生物技术
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天然产物化学
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绿色化学
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食品科学
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药物递送系统
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分子生物学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2019
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IF 6.97
Zhiyong Zhou,Haotian Liu,Jiahui Fan,Xueting Liu,Yafei Hu,Yulei Hu,Yong Wang,Zhongqi Ren
Sodium phosphomolybdate with a spatial stereo symmetry structure and stability in acid and alkali was used as a new coextraction agent for separating Li+. In addition, methyl isobutyl ketone and tributyl phosphate were used as diluent and extractant, respectively. The influence of operation conditions on separation performance of lithium ion was investigated. The single stage extraction efficiency of Li+ was 58.74% with the volume fraction of tributyl phosphate, O/A phase ratio, and molar ratio of sodium phosphomolybdate to lithium as 40%, 3.6, and 1, respectively. Then the cross-flow and saturated extraction experiments were conducted. When 0.2 mol/L LiCl + 1.8 mol/L NaCl solution was used as washing agent and O/A phase ratio was 3, the washing efficiency of Mg2+ reached up to 99.59%. When 0.26 mol/L HCl solution was used as stripping agent and O/A phase ratio was 3, the stripping efficiency of Li+ reached 98.3%. The difference in extraction efficiency was within 6.5% through 10 recyclings of the organic phase, indicating that the coextraction agent was very stable. The extraction mechanism was investigated and the binding ability of P═O in tributyl phosphate molecule followed the sequence Li+ ≫ Na+ > K+ > Mg2+.
研究领域:
化学工程
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材料科学
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环境化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）