Performance and Mechanism for the Selective Separation of Trivalent Americium from Lanthanides by a Tetradentate Phenanthroline Ligand in Ionic Liquid.
YOUZHEN LI
1
,
Xue Dong
1
,
Jianhua Yuan
1
,
Pu Ning
1
,
Pingping Wei
1
,
T.J. Sun
1
,
Wei-Qun Shi
2
,
Jing Chen
1
,
Jianchen Wang
1
,
Chao Xu
1
Publication type: Journal Article
Publication date: 2020-03-05
scimago Q1
wos Q1
SJR: 0.958
CiteScore: 7.4
Impact factor: 4.7
ISSN: 00201669, 1520510X
PubMed ID:
32133859
Inorganic Chemistry
Physical and Theoretical Chemistry
Abstract
The selective separation of trivalent americium from lanthanides in a nitric acid medium by a tetradentate ligand, N,N'-diethyl-N,N'-ditolyl-2,9-diamide-1,10-phenanthroline (Et-Tol-DAPhen), in an ionic liquid (IL), C4mimNTf2, was studied by batch solvent extraction and spectroscopic approaches. The effect of various parameters such as the contact time, temperature, extractant concentration, and acidity on the extraction of Am3+ and Eu3+ have been evaluated. A significant enhancement in the extraction ability of Et-Tol-DAPhen dissolved in IL was observed as compared to that in molecular diluents under low-acid conditions. The chemical stoichiometry of Am3+ and Eu3+ complexes during extraction was determined to be 1:2 (metal/ligand) by slope analysis of the extraction data. The extraction mechanism of Am3+ and Eu3+ by Et-Tol-DAPhen in IL was determined to be cation exchange on the basis of the effect of nitrate, NTf2-, and C4mim+ ions on extraction. The coordination chemistry of Ln3+ with the ligand in C4mimNTf2 was studied by spectroscopic titrations, which helped to further identify and confirm the extracted species as well as the extraction mechanism. Results from the present study emphasize the unique role of IL in altering the extraction behavior and suggest that the Et-Tol-DAPhen/IL system has potential applications in trivalent actinide/lanthanide separation under low-acid conditions.
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GOST
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LI Y. et al. Performance and Mechanism for the Selective Separation of Trivalent Americium from Lanthanides by a Tetradentate Phenanthroline Ligand in Ionic Liquid. // Inorganic Chemistry. 2020. Vol. 59. No. 6. pp. 3905-3911.
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LI Y., Dong X., Yuan J., Ning P., Wei P., Sun T., Shi W., Chen J., Wang J., Xu C. Performance and Mechanism for the Selective Separation of Trivalent Americium from Lanthanides by a Tetradentate Phenanthroline Ligand in Ionic Liquid. // Inorganic Chemistry. 2020. Vol. 59. No. 6. pp. 3905-3911.
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TY - JOUR
DO - 10.1021/acs.inorgchem.9b03566
UR - https://doi.org/10.1021/acs.inorgchem.9b03566
TI - Performance and Mechanism for the Selective Separation of Trivalent Americium from Lanthanides by a Tetradentate Phenanthroline Ligand in Ionic Liquid.
T2 - Inorganic Chemistry
AU - LI, YOUZHEN
AU - Dong, Xue
AU - Yuan, Jianhua
AU - Ning, Pu
AU - Wei, Pingping
AU - Sun, T.J.
AU - Shi, Wei-Qun
AU - Chen, Jing
AU - Wang, Jianchen
AU - Xu, Chao
PY - 2020
DA - 2020/03/05
PB - American Chemical Society (ACS)
SP - 3905-3911
IS - 6
VL - 59
PMID - 32133859
SN - 0020-1669
SN - 1520-510X
ER -
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Copy
@article{2020_LI,
author = {YOUZHEN LI and Xue Dong and Jianhua Yuan and Pu Ning and Pingping Wei and T.J. Sun and Wei-Qun Shi and Jing Chen and Jianchen Wang and Chao Xu},
title = {Performance and Mechanism for the Selective Separation of Trivalent Americium from Lanthanides by a Tetradentate Phenanthroline Ligand in Ionic Liquid.},
journal = {Inorganic Chemistry},
year = {2020},
volume = {59},
publisher = {American Chemical Society (ACS)},
month = {mar},
url = {https://doi.org/10.1021/acs.inorgchem.9b03566},
number = {6},
pages = {3905--3911},
doi = {10.1021/acs.inorgchem.9b03566}
}
Cite this
MLA
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LI, YOUZHEN, et al. “Performance and Mechanism for the Selective Separation of Trivalent Americium from Lanthanides by a Tetradentate Phenanthroline Ligand in Ionic Liquid..” Inorganic Chemistry, vol. 59, no. 6, Mar. 2020, pp. 3905-3911. https://doi.org/10.1021/acs.inorgchem.9b03566.
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