1
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Gaster CB, Felton DE, Sweet TFM, Oliver AG, Latuda A, Rogers J, Burns PC. Formation of Uranyl Peroxide Compounds via Dissolution of Studtite, [(UO 2)(O 2)(H 2O) 2](H 2O) 2, in Ionic Liquids. Inorg Chem 2024. [PMID: 39255845 DOI: 10.1021/acs.inorgchem.4c01903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Four uranyl peroxide compounds with novel structures were formed following the dissolution of studtite, [(UO2)(O2)(H2O)2](H2O)2, in imidazolium-based ionic liquids. The compounds were characterized using single crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD), Raman and infrared (IR) spectroscopy, and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS). The ionic liquids used in the experiments were 1-ethyl-3-methylimidazolium (EMIm) diethyl phosphate, EMIm ethyl sulfate, and EMIm acetate. Each of the four uranyl peroxide compounds contain components from the ionic liquids as terminal ligands on uranyl peroxide molecular units, bridging ligands in uranyl peroxide sheet structures, or charge balancing cations located in the interstitial space. The studtite dissolved in and reacted with the ionic liquids, producing unique crystal structures depending on the anionic component of the ionic liquid, the temperature at which the synthesis was performed, and the introduction of additional ionic species into the solution. This is the first report of studtite dissolving in and reacting with ionic liquids to form uranyl peroxide compounds, which has the potential to vastly increase the number of synthetic routes for the formation of uranyl peroxide clusters and uranyl peroxide cage clusters.
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Affiliation(s)
- Cale B Gaster
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Daniel E Felton
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Teagan F M Sweet
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Allen G Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Arianna Latuda
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jada Rogers
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Peter C Burns
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
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2
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Goyal P, Sengupta A, Srivastava A, Mukherjee S, Rout VV, Mohapatra PK. In-Situ-Generated Fluoride-Assisted Rapid Dissolution of Uranium Oxides by Ionic Liquids. Inorg Chem 2024; 63:7161-7176. [PMID: 38591969 DOI: 10.1021/acs.inorgchem.3c04075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
A quantitative, rapid, endothermic dissolution of U3O8 in C4mim·PF6 (1-alkyl-3-methyl imidazolium hexafluorophosphate) has been achieved within 2 h at 65 °C by in situ generated fluoride ions by pre-equilibrating the ionic liquid with suitable concentrations of nitric acid. The efficiency of the dissolution followed the trend: UO3 > UO2 > U3O8. The fluoride generation was found to increase with the concentration of nitric acid being equilibrated, the water content of the ionic liquid, and also the time of equilibration. The rate of dissolution of U3O8 followed the trend: C4mim·PF6> C6mim·PF6 > C8mim·PF6. The maximum loading observed for the present case was 200 mg mL-1 which is considered to be quite high with an ionic liquid. The effects of different acid pre-equilibration (HClO4, HCl) on F- generation and subsequent dissolution characteristics have also been investigated. The in situ F- generation, as well as U3O8 dissolution, were found to predominantly follow a pseudo-second-order rate kinetics, while the rate constants for U3O8 dissolution were found to be higher than that of F- generation. The dissolved uranium was successfully electrodeposited on a Cu plate, as confirmed by EDXRF, while the formation of UO2 was revealed from the XRD pattern of the deposit.
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Affiliation(s)
- Priya Goyal
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Arijit Sengupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Mumbai 400094, India
| | - Ashutosh Srivastava
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Sumanta Mukherjee
- Product Development Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Vaibhavi V Rout
- Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Prasanta K Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Mumbai 400094, India
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3
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Takao K. How does chemistry contribute to circular economy in nuclear energy systems to make them more sustainable and ecological? Dalton Trans 2023. [PMID: 37128944 DOI: 10.1039/d3dt01019h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
While one should be aware that its zero CO2 emission is actually achievable only when electric power is generated, nuclear power is one of the most viable and proven "carbon-free" energy sources to provide baseload electricity to the current energy-demanding society. Even after the power generation, the major part of spent nuclear fuels still consists of recyclable nuclear fuel materials such as U and Pu, promising circular economy of nuclear energy systems in principle. However, actual situations are not very simple due to the following issues: (1) resource security of nuclear fuel materials, (2) issues of depleted uranium, and (3) treatment and disposal of high-level radioactive wastes. In this Perspective, I discussed how chemistry can contribute to resolving these problems and what task academic research in fundamental chemistry should take on there.
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Affiliation(s)
- Koichiro Takao
- Laboratory for Zero-carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, 152-8550 Tokyo, Japan.
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4
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Unger AJ, Jensen MP. Room-Temperature Ionic Liquid Cation Effects on the Structure and Stability of Anionic Lanthanide Complexes. Inorg Chem 2023; 62:5553-5564. [PMID: 36976891 DOI: 10.1021/acs.inorgchem.3c00050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Room-temperature ionic liquids (RTILs) are a subset of molten salts that are liquids at room temperature and may offer an elegant, low-temperature route to predicting the properties of solvated metal complexes in their high-temperature analogues. This work studied the chemistry of chloride anion-containing RTILs to determine their similarity to inorganic molten chloride salts. The behaviors of complexes of Mn, Nd, and Eu were evaluated in a variety of chloride RTILs by absorption spectrophotometry and electrochemistry to elucidate trends in cation effects on the coordination geometry and redox properties of the solvated species. Spectrophotometric data indicated the metals are present as anionic complex (e.g., MnCl42- and NdCl63-) analogous to those observed in molten chloride salts. Strongly polarizing, charge-dense RTIL cations induced distortions to the symmetry of these complexes, resulting in lower oscillator strengths and red-shifted energies for the observed transitions. Cyclic voltammetry experiments were used to characterize the Eu(III/II) redox couple producing diffusion coefficients on the order of 10-8 cm2 s-1 and heterogeneous electron transfer rate constants ranging between 6 × 10-5 and 2 × 10-4 cm s-1. The E1/2 potentials for Eu(III/II) were also found to shift positively with increasing cation polarization power, stabilizing the Eu(II) oxidation state by removing electron density from the metal center over chloride bond networks. Both the optical spectrophotometry and electrochemistry results suggest that the polarization strength of an RTIL cation plays a major role in the geometry and stability of a metal complex.
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5
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Zhang P, Chen Y, Chen Y, Guo Q, Liu Y, Yang Y, Cao Q, Chong H, Lin M. Functionalized hierarchically porous carbon doped boron nitride for multipurpose and efficient treatment of radioactive sewage. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 866:161378. [PMID: 36610624 DOI: 10.1016/j.scitotenv.2022.161378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/16/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
In order to recycle Uranium (U) for the sustainable development of nuclear energy, diamide bipyridine (DABP) modified hierarchically porous carbon doped boron nitride (BCN-DABP) was synthesized as an adsorbent for the multipurpose removal of U. BCN-DABP displayed good adsorption performance for U in both weakly and highly acidic solutions. The hierarchically porous structure endowed BCN-DABP with ultrafast adsorption kinetics, and adsorption reached equilibrium within 180.0 and 0.5 min under pH = 4.0 and 2.00 mol L-1 HNO3, respectively. Moreover, combination of adsorption isotherm studies and DFT calculations showed that BCN-DABP possessed high adsorption capacities for U and displayed different adsorption performance under different conditions. BCN-DABP adsorbed UO22+ by chelation and electrostatic attraction under pH 4.0 and 2.00 mol L-1 HNO3, the maximum adsorption capacity under two conditions reached 818.7 and 1296.7 mg g-1, respectively. As a result, BCN-DABP is expected to be used for the rapid and efficient removal of U in various kinds of contaminated water. Furthermore, excellent salinity tolerance, good adsorption selectivity, and outstanding radiation resistance also endowed BCN-DABP with great practical potential for removing U in radioactive contaminated water as well as high level liquid waste.
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Affiliation(s)
- Peng Zhang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yawen Chen
- Beijing National Laboratory for Molecular Sciences, Fundamental Science Laboratory on Radiochemistry & Radiation Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yizhi Chen
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qiqi Guo
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yusen Liu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yu Yang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China; Reactor Operation and Application Research Sub-Institute, Nuclear Power Institute of China, Chengdu, Sichuan 610041, China
| | - Qi Cao
- Reactor Operation and Application Research Sub-Institute, Nuclear Power Institute of China, Chengdu, Sichuan 610041, China
| | - Hanbao Chong
- Instruments Center for Physical Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Mingzhang Lin
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
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6
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Chen B, Liu J, Wei H, Yang Y, Li X, Peng S, Yang Y. Complexation between uranyl(VI) and CMPO in a hydroxyl-functionalized ionic liquid: An extraction, spectrophotography, and calorimetry study. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.12.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Putkov AE, Vasiliev AN, Zubavichus YV, Teterin YA, Ivanov KE, Trigub AL, Kovalev VV, Vatsouro IM. XAS study of americium complexes with calixarene bearing carbamoylmethylphosphine oxide moieties. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.03.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Spectroscopic and electrochemical studies on the complexes of urea ligands with uranyl (VI) and europium (III) in ionic liquid. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07441-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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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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10
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Chotkowski M, Połomski D, Czerwinski K. Potential Application of Ionic Liquids for Electrodeposition of the Material Targets for Production of Diagnostic Radioisotopes. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5069. [PMID: 33182812 PMCID: PMC7697952 DOI: 10.3390/ma13225069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/31/2020] [Accepted: 11/06/2020] [Indexed: 12/28/2022]
Abstract
An overview of the reported electrochemistry studies on the chemistry of the element for targets for isotope production in ionic liquids (ILs) is provided. The majority of investigations have been dedicated to two aspects of the reactive element chemistry. The first part of this review presents description of the cyclotron targets properties, especially physicochemical characterization of irradiated elements. The second part is devoted to description of the electrodeposition procedures leading to obtain elements or their alloys coatings (e.g., nickel, uranium) as the targets for cyclotron and reactor generation of the radioisotopes. This review provides an evaluation of the role ILs can have in the production of isotopes.
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Affiliation(s)
- Maciej Chotkowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland;
- Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Damian Połomski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland;
- Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
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11
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Fan FL, Chen DS, Huang QG, Wang JR, Tan CM, Wu XL, Qin Z. Radiation effect on ionic liquid [Hbet][Tf2N] for Nd2O3 separation from simulated spent nuclear fuels. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07306-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Gupta R, Vats B, Pandey AK, Sharma MK, Sahu P, Yadav AK, Ali SM, Kannan S. Insight into Speciation and Electrochemistry of Uranyl Ions in Deep Eutectic Solvents. J Phys Chem B 2020; 124:181-189. [PMID: 31804081 DOI: 10.1021/acs.jpcb.9b08197] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Understanding the speciation of metal ions in heterogeneous hydrogen-bonded deep eutectic solvents (DES) has immense importance for their wide range of applications in green technology, environmental remediation, and nuclear industry. Unfortunately, the fundamental nature of the interaction between DES and actinide ions is almost completely unknown. In the present work, we outline the speciation, solvation mechanism, and redox chemistry of uranyl ion (UO22+) in DES consisting of choline chloride (ChCl) and urea as the hydrogen-bond donor. Electrochemical and spectroscopic techniques along with molecular dynamics (MD) simulations have provided a microscopic insight into the solvation and speciation of the UO22+ ion in DES and also on associated changes in physical composition of the DES. The hydrogen-bonded structure of DES plays an important role in the redox behavior of the UO22+ ion because of its strong complexation with DES components. X-ray absorption spectroscopy and MD simulations showed strong covalent interactions of uranyl ions with the constituents of DES, which led to rearrangement of the hydrogen-bonding network in it without formation of any clusters or aggregations. This, in turn, stabilizes the most unstable pentavalent uranium (UO2+) in the DES. MD analysis also highlights the fact that the number of H-bonds is reduced in the presence of uranyl nitrate irrespective of the presence of water with respect to pristine reline, which suggests high stability of the formed complexed species. The effect of added water up to 20 v/v % on speciation is insignificant for DES, but the presence of water influences the redox chemistry of UO22+ ions considerably. The fundamental findings of the present work would have far reaching consequences on understanding DES, particularly for application in the field of nuclear fuel reprocessing.
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Affiliation(s)
- Ruma Gupta
- Homi Bhabha National Institute , Anushaktinagar, Mumbai 400 096 , India
| | | | - Ashok K Pandey
- Homi Bhabha National Institute , Anushaktinagar, Mumbai 400 096 , India
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13
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Smetana V, Kelley SP, Titi HM, Hou X, Tang SF, Mudring AV, Rogers RD. Synthesis of Anhydrous Acetates for the Components of Nuclear Fuel Recycling in Dialkylimidazolium Acetate Ionic Liquids. Inorg Chem 2020; 59:818-828. [PMID: 31841315 DOI: 10.1021/acs.inorgchem.9b03077] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A series of anhydrous acetate salts with uranium {[C2C1im][UO2(OAc)3] (1), [C2C2im][UO2(OAc)3] (2), and [C4C1im][UO2(OAc)3] (3)}, lanthanides {[C2C2im]2[La(OAc)5] (4) and [C2C1im]2[Nd(OAc)5] (5)}, and strontium {[C2C1im]n[Sr(OAc)3]n (6)} (where C2C1im = 1-ethyl-3-methylimidazolium, C2C2im = 1,3-diethylimidazolium, C4C1im = 1-butyl-3-methylimidazolium, and OAc = acetate) have been prepared and structurally characterized. Both lanthanides and strontium are common components of the nuclear fuel waste, and their separation from uranium is an important but still challenging task. A new synthetic approach with dialkylimidazolium acetate ionic liquids (ILs) as the solvent has been developed for the direct synthesis of homoleptic acetates from the corresponding hydrates and, unexpectedly, hardly soluble f-element oxides. Although the group of characterized compounds shows perfect structural variability, all actinide and lanthanide metal ions form monomeric complex anions where the metal cation coordinates to five ligands including two oxygen atoms in the case of uranium, as is commonly observed for uranyl compounds. Crystallographic analyses revealed that the complex [UO2(OAc)3]- anions possess rather standard D3h symmetry featuring a hexagonal-bipyramidal coordination environment, while the lanthanide anions [Ln(OAc)5]2- are fully asymmetric and the Ln3+ cations are 10-coordinated in the form of a distorted bicapped tetragonal antiprism. This is the first report of lanthanide ions coordinated in this fashion. For Sr2+, 9-fold coordination through oxygen atoms in the form of a strongly distorted tricapped trigonal prism is observed. The crystallization of anhydrous, homoleptic, anionic acetate complexes from such a large variety of different metal salts appears to be due to the properties of dialkylimidazolium acetate ILs themselves, including enhanced basicity from the high concentration of free anions and their greater affinity for hydrogen-bonding solutes relative to metal cations.
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Affiliation(s)
- Volodymyr Smetana
- Department of Materials and Environmental Chemistry , Stockholm University , Svante Arrhenius väg 16 C , 10691 Stockholm , Sweden
| | - Steven P Kelley
- College of Arts & Sciences , The University of Alabama , Tuscaloosa , Alabama 35487 , United States
| | - Hatem M Titi
- Department of Chemistry , McGill University 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada
| | | | | | - Anja-Verena Mudring
- Department of Materials and Environmental Chemistry , Stockholm University , Svante Arrhenius väg 16 C , 10691 Stockholm , Sweden
| | - Robin D Rogers
- Department of Materials and Environmental Chemistry , Stockholm University , Svante Arrhenius väg 16 C , 10691 Stockholm , Sweden.,College of Arts & Sciences , The University of Alabama , Tuscaloosa , Alabama 35487 , United States.,Department of Chemistry , McGill University 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada
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14
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Joly F, Simon P, Trivelli X, Arab M, Morel B, Solari PL, Paul JF, Moisy P, Volkringer C. Direct conversion of uranium dioxide UO 2 to uranium tetrafluoride UF 4 using the fluorinated ionic liquid [Bmim][PF 6]. Dalton Trans 2020; 49:274-278. [PMID: 31803888 DOI: 10.1039/c9dt04327f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The industrial fluorination of UO2 to UF4 is based on a complex process involving the manipulation of a large amount of HF, a very toxic and corrosive gas. We present here a safer way to accomplish this reaction utilizing ionic liquid [Bmim][PF6] as a unique reaction medium and fluoride source.
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Affiliation(s)
- Florian Joly
- Unité de Catalyse et Chimie du Solide (UCCS), UMR CNRS 8181, Université de Lille, ENSC-Lille, Bat. C7, Avenue Mendeleïev, 59655 Villeneuve d'Ascq, France.
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15
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Complexation of CMPO with trivalent f-cations in ionic liquid medium: Solvent extraction, spectroscopic, EXAFS and DFT studies. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.01.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Smith PA, Burns PC. Ligand Mediated Morphology of the Two‐Dimensional Uranyl Aqua Sulfates [UO
2
(
X
)(SO
4
)(H
2
O)] [X = Cl
–
or (CH
3
)
3
NCH
2
COO]. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201800320] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Philip A. Smith
- Department of Civil and Environmental Engineering and Earth Sciences University of Notre Dame 46556 Notre Dame IN USA
| | - Peter C. Burns
- Department of Civil and Environmental Engineering and Earth Sciences University of Notre Dame 46556 Notre Dame IN USA
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17
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Dang J, Duan W, Wu W, Sun T, Li Y, Pu N, Xu L, Chen J, Xu C. Coordination of Nd(iii) and Eu(iii) with monodentate organophosphorus ligands in ionic liquids: spectroscopy and thermodynamics. NEW J CHEM 2019. [DOI: 10.1039/c8nj05618h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermodynamics and coordination nature of the complexes of Ln(iii) with three monodentate organophosphorus ligands in ionic liquids have been elucidated and illustrated by spectroscopic and calorimetric techniques.
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Affiliation(s)
- Jiahao Dang
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Wuhua Duan
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Wenchao Wu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Taoxiang Sun
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Youzhen Li
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Ning Pu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Lei Xu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Jing Chen
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
| | - Chao Xu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology, Tsinghua University
- Beijing
- China
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18
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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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19
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Fan FL, Qin Z, Cao SW, Tan CM, Huang QG, Chen DS, Wang JR, Yin XJ, Xu C, Feng XG. Highly Efficient and Selective Dissolution Separation of Fission Products by an Ionic Liquid [Hbet][Tf 2N]: A New Approach to Spent Nuclear Fuel Recycling. Inorg Chem 2018; 58:603-609. [PMID: 30565939 DOI: 10.1021/acs.inorgchem.8b02783] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Here, we propose the use of carboxyl-functionalized ionic liquid, [Hbet][Tf2N], to separate the fission products from spent nuclear fuels. This innovative method allows the selective dissolution of neutron poisons, lanthanides oxide, as well as some fission products with high yield, leaving most of the UO2 matrix and minor actinides behind in the spent nuclear fuel and accomplishing the actinides recovery as a group. Water-saturated [Hbet][Tf2N] can dissolve lanthanides oxide from simulated spent nuclear fuel with a dissolution ratio of 100% at 40 °C. However, the dissolution of uranium is almost negligible (<1%) under the same conditions. This big difference in dissolution provides a novel separation approach to spent nuclear fuel recycling and may open new perspectives for spent nuclear fuel reprocessing. The recovery of Nd and U from metal-loaded ionic liquids and the recyclability of the ionic liquid [Hbet][Tf2N] have also been investigated. Furthermore, a U/ x value related to the lattice energy U of metal compound M xO y is used to elaborate the solubility. This work represents the first case for efficient fission products removal by selective dissolution, avoiding the complete dissolution of spent nuclear fuel, the producing of the large high-level radioactive waste, and reducing environmental hazards.
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Affiliation(s)
- Fang-Li Fan
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Zhi Qin
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Shi-Wei Cao
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Cun-Min Tan
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Qing-Gang Huang
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - De-Sheng Chen
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Jie-Ru Wang
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Xiao-Jie Yin
- Institute of Modern Physics , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Chao Xu
- Nuclear Chemistry and Chemical Engineering Division, Institute of Nuclear and New Energy Technology , Tsinghua University , Beijing 100084 , China
| | - Xiao-Gui Feng
- Nuclear Chemistry and Chemical Engineering Division, Institute of Nuclear and New Energy Technology , Tsinghua University , Beijing 100084 , China
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20
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Paramanik M, Panja S, Dhami PS, Yadav JS, Kaushik CP, Ghosh SK. Unique reversibility in extraction mechanism of U compared to solvent extraction for sorption of U(VI) and Pu(IV) by a novel solvent impregnated resin containing trialkyl phosphine oxide functionalized ionic liquid. JOURNAL OF HAZARDOUS MATERIALS 2018; 354:125-132. [PMID: 29742483 DOI: 10.1016/j.jhazmat.2018.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 05/01/2018] [Accepted: 05/02/2018] [Indexed: 06/08/2023]
Abstract
Novel Solvent Impregnated Resin (SIR) material was prepared by impregnating a trialkyl phosphine oxide functionalized ionic liquid (IL) into an inert polymeric material XAD-7. A series of SIR materials were prepared by varying the IL quantity. Sorption of both U(VI) and Pu(IV) were found to increase with increasing IL concentration in SIR up to an optimum IL concentration of 435 mg g-1 of SIR beyond which no effect of IL concentration was observed. A change of mechanism of sorption for U(VI) by SIR was observed in comparison to solvent extraction. The dependency of U(VI) sorption with nitric acid concentration showed a reverse trend compared to solvent extraction studies while for Pu(IV) the trend remained same as observed with solvent extraction. Sorption of both the radionuclides was found to follow pseudo second order mechanism and Langmuir adsorption isotherm. Distribution co-efficient measurements on IL impregnated SIR showed highly selective sorption of U(VI) and Pu(IV) over other trivalent f-elements and fission products from nitric acid medium.
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Affiliation(s)
- M Paramanik
- Food Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - S Panja
- Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
| | - P S Dhami
- Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - J S Yadav
- Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - C P Kaushik
- Waste Management Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - S K Ghosh
- Food Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India.
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21
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New Ionic Liquid Based on the CMPO Pattern for the Sequential Extraction of U(VI), Am(III) and Eu(III). J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0730-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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Wu W, Sun T, Pu N, Meng D, Li Y, Dang J, Yang Y, Chen J, Xu C. Thermodynamic and spectroscopic study on the solvation and complexation behavior of Ln(iii) in ionic liquids: binding of Ln(iii) with CMPO in C4mimNTf2. NEW J CHEM 2018. [DOI: 10.1039/c8nj00344k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermodynamics of Ln(iii) complexation with CMPO in “dry” and “wet” ionic liquids reflects how solvation of Ln(iii) affects the complexation and helps identify the extractive species involved in solvent extraction.
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Affiliation(s)
- Wenchao Wu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Taoxiang Sun
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Ning Pu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Dechao Meng
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Youzhen Li
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Jiahao Dang
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Ying Yang
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- China
| | - Jing Chen
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Chao Xu
- Collaborative Innovation Center of Advanced Nuclear Energy Technology
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
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23
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Extraction of U(VI) by the ionic liquid hexyltributylphosphonium bis(trifluoromethylsulfonyl)imides: An experimental and theoretical study. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.07.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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A comparative study of the cathodic behaviour of EuCl3 in two imidazolium chloride ionic liquids, the 1-butyl-3-methylimidazolium (C4mimCl) and the 1-ethyl-3-methylimidazolium (C2mimCl), on a glassy carbon electrode. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.09.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Wu Q, Sun T, Meng X, Chen J, Xu C. Thermodynamic Insight into the Solvation and Complexation Behavior of U(VI) in Ionic Liquid: Binding of CMPO with U(VI) Studied by Optical Spectroscopy and Calorimetry. Inorg Chem 2017; 56:3014-3021. [PMID: 28212016 DOI: 10.1021/acs.inorgchem.6b03132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The complexation of U(VI) with octylphenyl-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO, denoted as L) in ionic liquid (IL) C4mimNTf2 was investigated by UV-vis absorption spectrophotometry and isothermal titration calorimetry. Spectro-photometric titration suggests that three successive complexes, UO2Lj2+ (j = 1-3), formed both in "dry" (water content < 250 ppm) and "wet" (water content ≈ 12 500 ppm) ionic liquid. However, the thermodynamic parameters are distinctly different in the two ILs. In dry IL, the complexation strength between CMPO and U(VI) is much stronger, with stability constants of the respective complexes more than 1 order of magnitude higher than that in wet IL. Energetically, the complexation of U(VI) with CMPO in dry IL is mainly driven by negative enthalpies. In contrast, the complexation in wet IL is overwhelmingly driven by highly positive entropies as a result of the release of a large amount of water molecules from the solvation sphere of U(VI). Moreover, comparisons between the fitted absorption spectra of complexes in wet IL and that of extractive samples from solvent extraction have identified the speciation involved in the extraction of U(VI) by CMPO in ionic liquid. The results from this study not only offer a thermodynamic insight into the complexation behavior of U(VI) with CMPO in IL but also provide valuable information for understanding the extraction behavior in the corresponding solvent extraction system.
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Affiliation(s)
- Qi Wu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum , Beijing 102249, China
| | | | - Xianghai Meng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum , Beijing 102249, China
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26
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Sengupta A, Mohapatra PK, Pathak P, Ghanty TK, Verboom W. Studies on neptunium complexation with CMPO- and diglycolamide-functionalized ionic liquids: experimental and computational studies. NEW J CHEM 2017. [DOI: 10.1039/c6nj03102a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A CMPO-functionalized task-specific ionic liquid provided significantly greater extraction of Np4+ than of NpO22+, which is of interest for radioactive waste treatment.
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Affiliation(s)
- Arijit Sengupta
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400 085
- India
| | | | - Priyanath Pathak
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400 085
- India
| | - Tapan Kumar Ghanty
- Theoretical Chemistry Section
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Willem Verboom
- Laboratory of Molecular Nanofabrication
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
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27
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Ansari SA, Mohapatra PK, Leoncini A, Ali SM, Singhadeb A, Huskens J, Verboom W. Unusual extraction of trivalent f-cations using diglycolamide dendrimers in a room temperature ionic liquid: extraction, spectroscopic and DFT studies. Dalton Trans 2017; 46:16541-16550. [DOI: 10.1039/c7dt03831c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The complexation of Am3+ and Eu3+ was studied with three generations of DGA-Den ligands in a room temperature ionic liquid.
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Affiliation(s)
- Seraj Ahmad Ansari
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Trombay
- Mumbai – 400 085
- India
| | | | - Andrea Leoncini
- Molecular Nanofabrication Group
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
| | - Sk Musharaf Ali
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Trombay
- Mumbai-400 085
- India
| | - Ashish Singhadeb
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Trombay
- Mumbai-400 085
- India
| | - Jurriaan Huskens
- Molecular Nanofabrication Group
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
| | - Willem Verboom
- Molecular Nanofabrication Group
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
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28
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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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29
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Ansari SA, Gujar RB, Mohapatra PK. Complexation of tetraalkyl diglycolamides with trivalent f-cations in a room temperature ionic liquid: extraction and spectroscopic investigations. Dalton Trans 2017; 46:7584-7593. [DOI: 10.1039/c7dt01090g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports the complexation of a series of tetraalkyl diglycolamides (TRDGA) with trivalent f-cations in a room temperature ionic liquid,viz. 3-octyl-1-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C8mim][Tf2N]).
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30
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Application of Radiation Chemistry to Some Selected Technological Issues Related to the Development of Nuclear Energy. Top Curr Chem (Cham) 2016; 374:60. [DOI: 10.1007/s41061-016-0058-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 07/22/2016] [Indexed: 10/21/2022]
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31
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Rama R, Rout A, Venkatesan K, Antony M. Effect of alkyl chain length of tri- n -alkyl phosphate extractants on the electrochemical behaviour of U(VI) in ionic liquid medium. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.04.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Electrochemical behavior of copper species in the 1-buthyl-3-methyl-imidazolium chloride (BMIMCl) ionic liquid on a Pt electrode. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.02.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Buz’ko VY, Chuiko GY, Kushkhov KB. Density functional theory study of UO 2 2+ solvation in 1-butyl-3-methylimidazolium chloride. RUSS J INORG CHEM+ 2016. [DOI: 10.1134/s0036023616030062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Takao K, Arakawa K, Mori T, Harada M, Ikeda Y. Outer-Sphere Extraction of Uranyl(VI) from HNO3(aq) to 1-Butyl-3-methylimidazolium Nonafluorobutanesulfonate Ionic Liquid: Towards Decontamination of Uranium Wastes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Koichiro Takao
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | - Kohei Arakawa
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | - Takahiro Mori
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | - Masayuki Harada
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | - Yasuhisa Ikeda
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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35
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Sengupta A, Murali MS, Mohapatra PK, Iqbal M, Huskens J, Verboom W. An insight into the complexation of UO22+ with diglycolamide-functionalized task specific ionic liquid: Kinetic, cyclic voltammetric, extraction and spectroscopic investigations. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.09.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Studies on electrochemical behavior of uranium species in choline chloride-urea eutectic for developing electrolytically treating method of uranium-bearing wastes. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4625-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Spectroscopic studies on uranyl complexes with tri-n-butyl phosphate (TBP) in ionic liquids. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4608-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Abstract
An ionic liquid (IL) approach for soft-donor f-element chemistry has been demonstrated by the isolation of several new uranyl dicyanamide complexes through reactions of UO2(NO3)2·6H2O with dicyanamide ([N(CN)2](-))-containing ILs. The [N(CN)2](-) ions are able to rapidly substitute uranium's O-donor ligands, as evidenced by single-crystal X-ray diffraction studies on two anhydrous adducts of UO2(NO3)2 with [N(CN)2](-) ILs as well as by IR and NMR spectroscopic studies on solutions of UO2(NO3)2 in these ILs. By contrast, the slow reaction of UO2(OAc)2·2H2O with a nitrile-functionalized imidazolium dicyanamide IL in solvent and the reaction of UO2(NO3)2·6H2O with NaN(CN)2 at elevated temperature resulted in irreversible hydrolysis. The reaction of UO2SO4 with [N(CN)2](-) ions in an acidified aqueous solution resulted in the crystallization of a [UO2](2+) complex with biuret, a N(CN)2](-) hydrolysis product. [N(CN)2](-) ions in the form of ILs react rapidly with [UO2](2+) at room temperature, allowing ligand substitution with [N(CN)2](-) to out-compete the slower hydrolysis reaction, enabling the isolation of uranyl dicyanamide complexes and challenging assumptions regarding the affinity of uranium for O-donors.
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Affiliation(s)
- Steven P Kelley
- Department for Chemistry, The University of Alabama , Tuscaloosa, Alabama 35487, United States
| | - Robin D Rogers
- Department for Chemistry, The University of Alabama , Tuscaloosa, Alabama 35487, United States.,Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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39
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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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40
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Influence of the benzyl substituent on radiation chemistry of selected ionic liquids: gaseous products analysis. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4151-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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41
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Atanassova M, Mazan V, Billard I. Modulating the Solubilities of Ionic Liquid Components in Aqueous-Ionic Liquid Biphasic Systems: A Q-NMR Investigation. Chemphyschem 2015; 16:1703-11. [DOI: 10.1002/cphc.201500071] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Indexed: 11/10/2022]
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42
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Pathak PN, Prabhu DR, Kumari N, Mohapatra PK. Studies on the Extraction of Actinides Using a Solvent Containing D2EHiBA in Room Temperature Ionic Liquids: Unusual Extraction of the Tetravalent Ions. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2014.973521] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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43
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Raut DR, Mohapatra PK. Extraction of Uranyl Ion Using 2-Thenoyltrifluoro Acetone (HTTA) in Room Temperature Ionic Liquids. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2014.973523] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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44
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Ansari SA, Liu L, Rao L. Binary lanthanide(iii)/nitrate and ternary lanthanide(iii)/nitrate/chloride complexes in an ionic liquid containing water: optical absorption and luminescence studies. Dalton Trans 2015; 44:2907-14. [DOI: 10.1039/c4dt03479a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Thermodynamic and spectroscopic data indicate that nitrate and chloride are stronger ligands than water for lanthanides in water saturated BumimTf2N.
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Affiliation(s)
- Seraj A. Ansari
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Radiochemistry Division
| | - Lisheng Liu
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Department of Radiochemistry
| | - Linfeng Rao
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
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45
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Takao K, Takao S. Efficient and Versatile Anion Metathesis Reaction for Ionic Liquid Preparation by Using Conjugate Acid and Ortho Ester. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Koichiro Takao
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
| | - Shinobu Takao
- Innovation Research Center for Fuel Cells, The University of Electro-Communications
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46
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Sengupta A, Mohapatra PK, Kadam RM, Manna D, Ghanty TK, Iqbal M, Huskens J, Verboom W. Diglycolamide-functionalized task specific ionic liquids for nuclear waste remediation: extraction, luminescence, theoretical and EPR investigations. RSC Adv 2014. [DOI: 10.1039/c4ra05798h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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47
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Hashem E, Platts JA, Hartl F, Lorusso G, Evangelisti M, Schulzke C, Baker RJ. Thiocyanate complexes of uranium in multiple oxidation states: a combined structural, magnetic, spectroscopic, spectroelectrochemical, and theoretical study. Inorg Chem 2014; 53:8624-37. [PMID: 25072532 DOI: 10.1021/ic501236j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A comprehensive study of the complexes A4[U(NCS)8] (A = Cs, Et4N, (n)Bu4N) and A3[UO2(NCS)5] (A = Cs, Et4N) is described, with the crystal structures of [(n)Bu4N]4[U(NCS)8]·2MeCN and Cs3[UO2(NCS)5]·O0.5 reported. The magnetic properties of square antiprismatic Cs4[U(NCS)8] and cubic [Et4N]4[U(NCS)8] have been probed by SQUID magnetometry. The geometry has an important impact on the low-temperature magnetic moments: at 2 K, μeff = 1.21 μB and 0.53 μB, respectively. Electronic absorption and photoluminescence spectra of the uranium(IV) compounds have been measured. The redox chemistry of [Et4N]4[U(NCS)8] has been explored using IR and UV-vis spectroelectrochemical methods. Reversible 1-electron oxidation of one of the coordinated thiocyanate ligands occurs at +0.22 V vs Fc/Fc(+), followed by an irreversible oxidation to form dithiocyanogen (NCS)2 which upon back reduction regenerates thiocyanate anions coordinating to UO2(2+). NBO calculations agree with the experimental spectra, suggesting that the initial electron loss of [U(NCS)8](4-) is delocalized over all NCS(-) ligands. Reduction of the uranyl(VI) complex [Et4N]3[UO2(NCS)5] to uranyl(V) is accompanied by immediate disproportionation and has only been studied by DFT methods. The bonding in [An(NCS)8](4-) (An = Th, U) and [UO2(NCS)5](3-) has been explored by a combination of DFT and QTAIM analysis, and the U-N bonds are predominantly ionic, with the uranyl(V) species more ionic that the uranyl(VI) ion. Additionally, the U(IV)-NCS ion is more ionic than what was found for U(IV)-Cl complexes.
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Affiliation(s)
- Emtithal Hashem
- School of Chemistry, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
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Mincher BJ, Wishart JF. The Radiation Chemistry of Ionic Liquids: A Review. SOLVENT EXTRACTION AND ION EXCHANGE 2014. [DOI: 10.1080/07366299.2014.925687] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hawkins CA, Bustillos CG, Copping R, Scott BL, May I, Nilsson M. Challenging conventional f-element separation chemistry – reversing uranyl(vi)/lanthanide(iii) solvent extraction selectivity. Chem Commun (Camb) 2014; 50:8670-3. [DOI: 10.1039/c4cc03031a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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