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Higgins CJ, Luebke KI, Poineau F, Czerwinski KR, Hatchett DW. Direct dissolution and spectroscopic characterization of uranium hexafluoride in ionic liquid. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08543-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Mohapatra PK, Mahanty B. Direct dissolution of metal oxides in ionic liquids as a smart strategy for separation: Current status and prospective. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2038204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Bholanath Mahanty
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, India
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3
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Selection of a suitable ligand for the supercritical extraction of gold from a low-grade refractory tailing. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2021.105415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Rao A. Comparative study on aqueous acid free UO 2 dissolution-extraction using DHOA adduct into room temperature ionic liquid/supercritical carbon dioxide/n-hexane. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2020-0072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Feasibility was established for direct dissolution-extraction of uranium employing adduct of N,N-dihexyl octanamide (DHOA), thus eliminating discrete aqueous phase and free acid usage. Various aspects of dissolution of solid uranium dioxide and extraction of uranium into molecular diluent viz. n-hexane and neoteric solvents viz. room temperature ionic liquid (RTIL) and supercritical carbon dioxide (SC CO2) were studied. The organic adduct was found to have composition DHOA.(HNO3)0.78(H2O)0.4. Adduct miscibility and UO2 dissolution behavior was markedly different for RTIL and n-hexane. The dissolution process, studied by monitoring UV–Vis spectra, was found to be pseudo first order with a rate constant of of 0.074 min−1 and 0.036 min−1 for n-hexane and RTIL respectively. Irrespective of medium, dissolution-extraction efficiency of ≥90% was achievable. Using RTIL for dissolution-extraction medium and SC CO2 for stripping is promising in terms of overall efficiency as well as RTIL recovery by avoiding aqueous cross contamination.
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Affiliation(s)
- Ankita Rao
- Radio chemistry Division , Bhabha Atomic Research Centre , Trombay , Mumbai 400 085 , India
- Homi Bhabha National Institute , Mumbai 400094 , India
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6
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Yao A, Xiong X, Kang M, Guo Y, Chen C, Chu T. Direct dissolution of UO 2 in carboxyl-functionalized ionic liquids in the presence or absence of Fe-containing ionic liquids. Dalton Trans 2020; 49:14881-14890. [PMID: 33074270 DOI: 10.1039/d0dt02740e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dissolution of UO2 is a prerequisite for the reprocessing of spent nuclear fuel. This study showed that UO2 could be directly dissolved in a single carboxyl-functionalized ionic liquid (IL), [HOOCMmim][Tf2N] 1-carboxymethyl-3-methylimidazolium bistriflimide, or [HOOCEtmim][Tf2N] 1-carboxyethyl-3-methylimidazolium bistriflimide. The addition of an extra Fe-containing IL, [Emim][FeCl4] (Emim, 1-ethyl-3-methylimidazolium) or [Bmim][FeCl4] (Bmim, 1-butyl-3-methylimidazolium) could significantly improve the dissolution kinetics. Results demonstrated that the dissolution process in the early stage could be described by using the pseudo first-order rate law. The apparent activation energy for UO2 dissolution in the mixture of the Fe-containing IL and carboxyl-functionalized IL was calculated to be ∼67 kJ mol-1, implying that the reaction was mainly controlled by a chemical process. Nevertheless, the influence of the diffusion process is non-negligible since the IL has a relatively high viscosity that can retard the diffusion of the formed uranyl species from the UO2 surface. Spectroscopic studies and density functional theory calculations indicated that the uranyl ion coordinated with carboxylate groups is the predominant product for UO2 dissolution in the single carboxyl-functionalized IL, while uranyl chloride complexes would also form in the mixed ILs. The dissolved uranyl species can be successfully recovered from the ILs by extraction. The success of UO2 dissolution in the carboxyl-functionalized IL with or without the Fe-containing IL indicates that the Fe-containing IL and oxygen can serve as an effective catalyst and oxidant for the dissolution of UO2, respectively.
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Affiliation(s)
- Aining Yao
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, 519082 Zhuhai, China.
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Yao A, Qu F, Liu Y, Qu G, Lin H, Hu S, Wang X, Chu T. Ionic liquids with polychloride anions as effective oxidants for the dissolution of UO2. Dalton Trans 2019; 48:16249-16257. [DOI: 10.1039/c9dt03574e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Polychloride ionic liquids can not only successfully dissolve UO2, but also raise the chlorine efficiency.
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Affiliation(s)
- Aining Yao
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Feng Qu
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Yu Liu
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Guangyin Qu
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Hao Lin
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Shaowen Hu
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Xiangyun Wang
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Taiwei Chu
- Radiochemistry and Radiation
- Chemistry Key Laboratory of Fundamental Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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Zhang X, Yuan L, Chai Z, Shi W. Towards understanding the correlation between UO22+ extraction and substitute groups in 2,9-diamide-1,10-phenanthroline. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9227-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Investigations on the Physicochemical and Radiolytic Degradation Properties of Tri-n-butylphosphate–Ionic Liquid in the Presence of Nitric Acid. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0721-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Significant enhanced uranyl ions extraction efficiency with phosphoramidate-functionalized ionic liquids via synergistic effect of coordination and hydrogen bond. Sci Rep 2017; 7:15735. [PMID: 29146928 PMCID: PMC5691085 DOI: 10.1038/s41598-017-15899-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 11/02/2017] [Indexed: 11/08/2022] Open
Abstract
The influence of the linking group between the phosphoryl and bridging moieties in phosphoryl-containing task-specific ionic liquids (TSILs) on the extraction of uranyl ions was experimentally and theoretically investigated. A novel phosphoramidate-based TSIL with an amine group as the linking moiety resulted in a higher uranyl ion extraction efficiency compared with that of other phosphoryl-based TSILs. A distribution ratio of 4999 ± 51 can be achieved for uranyl ions. The uranyl ions (76.7 ± 1.5%) were stripped from the loaded ionic liquid phase in a single stage using 0.05 M diethylenetriamine pentaacetic acid in a 1.0 M guanidine carbonate solution. The extraction stoichiometry of the uranyl ions was determined by a slope analysis of the extraction data. Furthermore, the fundamental nature of the interaction between the phosphoramidate-based TSIL and uranyl ions was theoretically studied for the first time. The theoretical calculations demonstrated that the synergistic effect of the complexation interaction and H-bond formation between the phosphoramidate-functional ionic liquid and uranyl nitrate led to the higher extraction efficiency. These results provide a basis for rational design, synthesis and potential applications of novel TSILs for uranyl extraction.
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11
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Molecular dynamics simulation study of hydration of uranyl nitrate in supercritical water: Dissecting the effect of uranyl ion concentration from solvent density. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2017.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Sinclair L, Baek D, Thompson J, Tester J, Fox R. Rare earth element extraction from pretreated bastnäsite in supercritical carbon dioxide. J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2017.01.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Mohapatra PK. Actinide ion extraction using room temperature ionic liquids: opportunities and challenges for nuclear fuel cycle applications. Dalton Trans 2017; 46:1730-1747. [DOI: 10.1039/c6dt04898f] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Studies on the extraction of actinide ions from radioactive wastes have great relevance in nuclear fuel cycle activities, mainly in the back end processes focused on reprocessing and waste management.
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Chopra M, Choudhury N. Structural and dynamical aspects of uranyl ions in supercritical water: A molecular dynamics simulation study. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Li W, Yang S, Lv H, Liu Z, Wu J, Li S, Shen Y. Solvent extraction of Th(IV) from aqueous solution with methylimidazole in ionic liquid. RADIOCHIM ACTA 2016. [DOI: 10.1515/ract-2015-2450] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
An extraction of Th(IV) was performed using 1- methylimidazole (1-MIM) or 2-methylimidazole (2-MIM) as the extractant in imidazolium type ionic liquids (ILs) or n-pentanol. The extractability for Th4+ in ILs was by far higher than that obtained in n-pentanol. The extraction mechanism was determined by slope analysis and ESI-MS. The transfer of Th4+ with MIM into ILs proceeded through both a cationic exchange and a neutral solvation mechanism, whereas the partitioning of Th4+ with MIM into n-pentanol only underwent a neutral solvation mechanism. The thermodynamic parameters values (ΔH, ΔS and ΔG) for extraction of Th4+ with 1-MIM in IL were calculated and the results indicated the extraction reaction was spontaneous and went through endothermic process. Separation of Th4+ from the solution of lanthanides (III) and uranium was also carried out by 1-MIM in ILs and n-pentanol.
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Affiliation(s)
- Wenkui Li
- Radiochemistry Laboratory, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shenghua Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou 730000, P. R. China
| | - Hui Lv
- Radiochemistry Laboratory, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ziyi Liu
- Radiochemistry Laboratory, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jianrong Wu
- Radiochemistry Laboratory, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shun Li
- Radiochemistry Laboratory, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yinglin Shen
- Radiochemistry Laboratory, Lanzhou University, Lanzhou 730000, P. R. China
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Homogeneous liquid–liquid extraction of U(VI) from HNO3 aqueous solution to betainium bis(trifluoromethylsulfonyl)imide ionic liquid and recovery of extracted U(VI). Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.01.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Freiderich JW, Stankovich JJ, Luo H, Dai S, Moyer BA. Dissolution of the Rare-Earth Mineral Bastnaesite by Acidic Amide Ionic Liquid for Recovery of Critical Materials. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500509] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Wu X, Liu Y, Hu S, Chu T. Extraction of uranyl ion into ionic liquid by N,N,N′,N′-tetrabutylsuccinamide and spectroscopic study of uranyl complex. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4257-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Quach DL, Mincher BJ, Wai CM. Supercritical fluid extraction and separation of uranium from other actinides. JOURNAL OF HAZARDOUS MATERIALS 2014; 274:360-366. [PMID: 24801893 DOI: 10.1016/j.jhazmat.2014.04.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 04/10/2014] [Accepted: 04/14/2014] [Indexed: 06/03/2023]
Abstract
The feasibility of separating U from nitric acid solutions of mixed actinides using tri-n-butylphosphate (TBP)-modified supercritical fluid carbon dioxide (sc-CO2) was investigated. The actinides U, Np, Pu, and Am were extracted into sc-CO2 modified with TBP from a range of nitric acid concentrations, in the absence of, or in the presence of, a number of traditional reducing and/or complexing agents to demonstrate the separation of these metals from U under sc-CO2 conditions. The separation of U from Pu using sc-CO2 was successful at nitric acid concentrations of less than 3M in the presence of acetohydroxamic acid (AHA) or oxalic acid (OA) to mitigate Pu extraction, and the separation of U from Np was successful at nitric acid concentrations of less than 1M in the presence of AHA, OA, or sodium nitrite to mitigate Np extraction. Americium was not well extracted under any condition studied.
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Affiliation(s)
- Donna L Quach
- Department of Chemistry, University of Idaho, Moscow, ID 83844, USA
| | | | - Chien M Wai
- Department of Chemistry, University of Idaho, Moscow, ID 83844, USA
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Sasaki K, Suzuki T, Mori T, Arai T, Takao K, Ikeda Y. Selective Liquid–Liquid Extraction of Uranyl Species Using Task-specific Ionic Liquid, Betainium Bis(trifluoromethylsulfonyl)imide. CHEM LETT 2014. [DOI: 10.1246/cl.140048] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Tomoya Suzuki
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | - Takahiro Mori
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | | | - Koichiro Takao
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | - Yasuhisa Ikeda
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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Sasaki K, Suzuki T, Arai T, Takao K, Suzuki S, Yaita T, Ikeda Y. Uranyl Species in 1-Ethyl-3-methylimidazolium Nitrate ([EMI][NO3]) Solution of [EMI]2[UO2(NO3)4]: First Spectrophotometric Evidence for Existence of [UO2(NO3)4]2−. CHEM LETT 2014. [DOI: 10.1246/cl.131183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Tomoya Suzuki
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | | | - Koichiro Takao
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | | | | | - Yasuhisa Ikeda
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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23
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Yao A, Chu T. Fe-containing ionic liquids as effective and recoverable oxidants for dissolution of UO2 in the presence of imidazolium chlorides. Dalton Trans 2013; 42:8413-9. [DOI: 10.1039/c3dt32832e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Affiliation(s)
- Koichiro Takao
- Department of Materials
and Life Science, Seikei University, 3-3-1 Kichijoji-Kitamachi, Musashino-shi, Tokyo 180-8633, Japan
| | - Thomas James Bell
- Research Laboratory for Nuclear
Reactors, Tokyo Institute of Technology, 2-12-1-N1-34 O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yasuhisa Ikeda
- Research Laboratory for Nuclear
Reactors, Tokyo Institute of Technology, 2-12-1-N1-34 O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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Electrochemical behavior of [UO2Cl4]2− in 1-ethyl-3-methylimidazolium based ionic liquids. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4693-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Sun X, Luo H, Dai S. Ionic liquids-based extraction: a promising strategy for the advanced nuclear fuel cycle. Chem Rev 2011; 112:2100-28. [PMID: 22136437 DOI: 10.1021/cr200193x] [Citation(s) in RCA: 553] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoqi Sun
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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