CHEMICAL PHYSICS LETTERS
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2022
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IF 2.719
Hui-fang Li,Li-juan Li,Wu Li
The cause and mechanism of the third phase in the process of lithium extraction using tributyl phosphate(TBP) as extractant, kerosene as diluent, and FeCl 3 as co-extractant were studied. The third phase appeared in the extraction process was because the diluent kerosene had poor solubility to the extracted complex and the TBP as the solvent was not enough to completely dissolve the extracted complex; The addition of EA, BA, MIBK and DIBK contributed to the extraction of lithium and accelerated the phase separation, with clear phase interface and no third phase appearing in the extraction process.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Xiaoyang Hu,Haowei Xu,Zhuang Wang,Qiao Yu,Xuanhao Huang,Xingyue Liu,Qiang Tian,Songdong Ding
Diglycolamide (DGA) extractants, especially TODGA ( N , N , N′ , N′ ‐tetraoctyl diglycolamide), show significant potential in high-level liquid waste treatment. However, their limited loading capacity for trivalent lanthanides (Lns) and actinides (Ans) often leads to detrimental emulsification or third phase formation, hindering their practical applicability. Herein, TOOEDGA ( N , N , N’ , N’ -tetra(2-(octyloxy)ethyl)diglycolamide), a new DGA extractant with long C-chains combined with ether bonds, exhibits superior extraction performance towards Am 3+ and Eu 3+ in HNO 3 solution compared to TODGA. The factors influencing the formation of a third phase during the extraction process were investigated. It has been shown that TOOEDGA has a greater loading capacity for Lns 3+ and can tolerate a wider concentration range of HNO 3 . Additionally, the aggregation behavior of DGAs in n -dodecane was also studied using dynamic light scattering and small-angle X-ray scattering, revealing that the reverse micelles formed by TOOEDGA are more stable than those formed by TODGA. Moreover, under similar conditions, TOOEDGA molecules do not aggregate further to generate rod-like reverse micelle aggregates like those observed with TODGA, which is beneficial to inhibit the formation of the third phase. Consequently, our results suggest that TOOEDGA holds great promise as an alternative DGA extractant for practical industrial applications.
研究领域:
化学
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核化学与放射化学
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环境科学
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DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2025
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IF 1.6
Huang Xuanhao,Liu Xingyue,Wang Yiting,Wang Zhuang,Yu Qiao,Zhou Hang,Li Rui,Ding Songdong
As one of the main radiolysis products of tri-isoamyl phosphate (TiAP) in the spent fuel reprocessing process, di-isoamyl phosphate (DiAP) can lead to a significant deterioration of TiAP in extraction performance. In this context, the effect of DiAP on the extraction and stripping behaviors of U(VI), Th(IV), and Zr(IV) for 1.1 mol/L TiAP/ n -dodecane organic phase was investigated for the first time. It has been shown that DiAP can increase the ability of TiAP to extract metal ions and inhibit the stripping, as well as promote the formation of interfacial deposition. Combined with the results of DLS, FT-IR, 31 P NMR, ESI-MS and elemental analysis, the role of DiAP in the formation of interfacial deposition was also elucidated.
研究领域:
化学工程
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核能科学与工程
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放射化学
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DOI
高影响因子
RSC Advances
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2021
·Vol. 11
·期 45
·27969-27977
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IF 3.361
Yaoyang Liu,Sheng Liu,Zhibin Liu,Chuang Zhao,Chunhui Li,Yu Zhou,Caishan Jiao,Yang Gao,Hui He,Shaowen Zhang
A novel asymmetric diglycolamide N,N-dimethyl-N′,N′-dioctyl diglycolamide (LII) was synthesized. The Nd(III) extraction behavior from HNO3 and loading capability of the solution of LII in 40/60 (v/v)% n-octanol/kerosene were studied. Analyses by the slope method, ESI-MS, and FT-IR indicated that, similar to the previously studied isomer ligand N,N′-dimethyl-N,N′-dioctyl diglycolamide (LI), 1 : 3 Nd(III)/LII complexes formed. Under the same experimental conditions, the distribution ratio and limiting organic concentration of LII towards Nd(III) were smaller than those of LI, but the critical aqueous concentration of LII was larger, which implies that LII exhibited poorer extraction and loading capabilities towards Nd(III) than LI, and LII has a tendency to be less likely to form the third phase. The quasi-relativistic density functional theory (DFT) calculation was performed to provide some explanations for the differences in their extraction behaviors. The electrostatic potential of the ligands indicated that the electron-donating ability of the amide O atoms in LII displayed certain differences compared with LI. This inhomogeneity in LII affected the interaction between LII and Nd(III), as supported by QTAIM and bonding nature analysis, and it seemed to reflect in the extraction performance towards Nd(III).
研究领域:
化学
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材料科学
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Ting Li,Shishun Dong,Qifeng Wei,Xiulian Ren
Based on the theory of critical micelle , a Gemini type amide based ionic liquid system was developed to effectively extract Zr(IV) and Hf(IV) dispersed in an acidic chloride solution from the liquid phase into the organic phase through a coordination driven process. We focused on the effect of the reverse micelles formed during the extraction process of the extracted compound on the stability of the coordination system. The 'third phase' problem in the organic phase during the extraction process was analyzed from the perspective of molecular polarity. Thus, the strategy of Gemini amide ionic liquid applied to the extraction of metal ions in an acidic chloride system was improved.
研究领域:
化学
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环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）