1
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A comparison on the use of DEHBA or TBP as extracting agent for tetra- and hexavalent actinides in the CHALMEX Process. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08481-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
AbstractThe Chalmers Grouped ActiNide EXtraction process is a solvent extraction process for the homogeneous recycling of spent nuclear fuel. The use of TBP for the extraction of tetra- and hexavalent actinides can be problematic for several reasons, including troublesome degradation products causing crud formation, decreased extraction yield and the possibility of explosive red oil reactions. Here, the substitution of TBP by a N,N-dialkyl monoamide, DEHBA, is investigated. The findings suggest that DEHBA can be a suitable extracting agent for use in the CHALMEX solvent, although identified drawbacks need to be further investigated.
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2
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Wang Q, Liu Z, Xia M, Song YF, Chai Z, Wang D. Biphasic Behaviors of Nd 3+ Bound with Cyanex272, Cyanex301, and Cyanex302: A Molecular Dynamics Simulation Study. Inorg Chem 2022; 61:8920-8929. [PMID: 35649185 DOI: 10.1021/acs.inorgchem.2c01118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By means of molecular dynamics simulations, this work addresses the conformational flexibility and migration of trivalent neodymium (Nd3+) coordinated with three or six titled (thio)phosphinic ligands and shows that the fluxionality of the complexes enables them to adapt to the solvent environment during the migration. Cyanex272 forms a more compact complex than the other two types of ligands and screens more significantly the interaction between the water solvent and the metal ion in the complex, which weakens the detainment of the aqueous environment. This results in faster motion of the Nd(C272)3 complex both in its translation and rotation than the other complexes when migrating to the organic phase and wins over the other two ligands in transporting the metal ions from the aqueous phase to the organic phase. Depending on the solvent environment, these complexes may take two types of conformations to balance the forces from the environment benefited from their fluxionality. The migration of the M:L = 1:6 complexes, Nd[H(C272)2]3 and Nd[H(C301)2]3, was also investigated. The rich presence of the alkyl groups in the complexes screens the influence of the aqueous environment and benefits the transportation of metal ions to the interface. This work is expected to contribute to the community of inorganic chemistry interested in the coordination chemistry of metal ions and their behaviors in the condensed phase.
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Affiliation(s)
- Qin Wang
- State Key Laboratory of Chemical Resource Engineering, School of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.,State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Ziyi Liu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Miaoren Xia
- Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Fei Song
- State Key Laboratory of Chemical Resource Engineering, School of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Zhifang Chai
- State Key Laboratory of Radiation Medicine and Protection, and School of Radiation Medicine and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, Jiangsu 215123, China.,Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Dongqi Wang
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.,Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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3
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Das A, Ali SM. Deciphering the curved profile of uranyl ions at the aqueous-organic interface by atomistic simulations. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Servis MJ, Martinez-Baez E, Clark AE. Hierarchical phenomena in multicomponent liquids: simulation methods, analysis, chemistry. Phys Chem Chem Phys 2020; 22:9850-9874. [PMID: 32154813 DOI: 10.1039/d0cp00164c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Complex, multicomponent, solutions have often been studied solely through the lens of specific applications of interest. Yet advances to both simulation methodologies (enhanced sampling, etc.) and analysis techniques (network analysis algorithms and others), are creating a trove of data that reveal transcending characteristics across vast compositional phase space. This perspective discusses technical considerations of the reliable and accurate simulations of complex solutions, followed by the advances to analysis algorithms that elucidate coupling of different length and timescale behavior (hierarchical phenomena). The different manifestations of hierarchical phenomena are presented across an array of solution environments, emphasizing fundamental and ongoing science questions. With a more advanced molecular understanding in hand, a quintessential application (solvent extraction) is discussed, where significant opportunities exist to re-imagine the technical scope of an established technology.
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Affiliation(s)
- Michael J Servis
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA.
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5
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Zhang Y, Wang N, Zou L, Zhang M, Chi R. Molecular dynamics simulation on the dissolution process of Kaempferol cluster. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Liu Z, Ren X, Tan R, Chai Z, Wang D. Key Factors Determining Efficiency of Liquid-Liquid Extraction: Implications from Molecular Dynamics Simulations of Biphasic Behaviors of CyMe 4-BTPhen and Its Am(III) Complexes. J Phys Chem B 2020; 124:1751-1766. [PMID: 32039594 DOI: 10.1021/acs.jpcb.9b08447] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
CyMe4-BTPhen (2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-1,10-phenanthroline, denoted as L) has been considered as a promising extractant in lanthanide(III)/actinide(III) separation. Vast endeavors in its application put forward a compelling need on the understanding of the underlying mechanism in the liquid-liquid extraction. To address the issue of its dynamics in biphasic systems, we carried out molecular dynamics (MD) simulations of L and its complexes with a heavy f-block metal ion, americium(III) (Am3+) in "oil"/water binary solvents. Two types of organic phases have been considered, differing in the presence of octanol in the bulk n-dodecane or not, and the distribution of the solutes and their interfacial behaviors have been investigated. Two of the key factors that determine the efficiency of a liquid-liquid extraction protocol were delineated and discussed, that is, the appropriate ligand to enhance the lipophilicity of AmL complexes and appropriate way to form ion pairs to minimize the attraction between the complexes and aqueous phase. The simulations showed that the charge states of both ligand and AmL complexes were strongly correlated with their phase behavior, and the migration of neutral species was driven by van der Waals interactions while that of charged species by electrostatic interactions, indicating stronger lipophilicity of the former than the latter. The presence of octanol facilitated the migration of the ligand from the interface to the organic phase via hydrogen bond between its polar head and the ligand or the AmL complexes and constituted a polar core in the organic phase. This work bridged the widely used liquid-liquid extraction technique in chemistry to a fundamental chemical concept, that is, minimization of hydrophilicity and maximization of lipophilicity to facilitate phase transfer from the aqueous phase to the organic phase, and is expected to improve the understanding of dynamics of ligands and their complexes with metal ions and to contribute to the development of efficient protocols for phase transfer of target species.
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Affiliation(s)
- Ziyi Liu
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu Ren
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rongri Tan
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.,College of Communication and Electronics, Jiangxi Science & Technology Normal University, Nanchang 330013, China
| | - Zhifang Chai
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,State Key Laboratory of Radiation Medicine and Protection, and School of Radiation Medicine and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou 215123, China
| | - Dongqi Wang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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7
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Jing Y, Chen J, Su W, Chen L, Liu Y, Li D. Deep insights into the solution and interface behaviors in heavy rare earth extraction: A molecular dynamics study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Druchok M, Lukšič M. Carboxylated carbon nanotubes can serve as pathways for molecules in sandwich-like two-phase organic-water systems. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Fatehi M, Mohebbi A, Moradi A. Molecular dynamics insight into the behaviour of 5-nonylsalicylaldoxime and its complex with Cu(II) in different diluent/water systems. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Servis MJ, Clark AE. Surfactant-enhanced heterogeneity of the aqueous interface drives water extraction into organic solvents. Phys Chem Chem Phys 2019; 21:2866-2874. [DOI: 10.1039/c8cp06450d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Liquid/liquid extraction (LLE) is one of the most industrially relevant separations methods. Adsorbed surfactant is demonstrated to enhance interfacial heterogeneity and lead to water protrusions that form the basis for transport into the organic phase.
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Affiliation(s)
| | - Aurora E. Clark
- Department of Chemistry
- Washington State University
- Pullman
- USA
- Pacific Northwest National Laboratory
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11
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Druchok M, Lukšič M. Carboxylated carbon nanotubes corked with tetraalkylammonium cations: A concept of nanocarriers in aqueous solutions. J Mol Liq 2018; 270:203-211. [PMID: 30906092 PMCID: PMC6425971 DOI: 10.1016/j.molliq.2017.11.107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
An explicit water molecular dynamics simulations were used to probe (6,6) and (9,9) single-walled carbon nanotubes, functionalized with three carboxylate ion groups at each of the two openings, as potential nanocarriers in aqueous solutions. Three tetraalkylammonium cations (i.e., tetraethyl-, tetrapropyl-, and tetrabuthylammonium) were tested as corks to cap the nanotube openings. The variation of the sizes of the nanotubes (diameter) and of the cork cations (bulkiness) allowed us to select the proper corks that fit the nanotube openings best. Smaller tetraalkylammonium ions could easily fit the openings, but since they are less hydrophobic compared to their larger analogues they showed less affinity for the interior of the nanotubes. On the other hand, the hydrophobicity (and thus the affinity for the nanotubes) can be adjusted through the increase of tetraalkylammonium cation size, providing that the cork still fits the opening. Additionally, an external electric field was tested as a means of nanotube uncorking. The field is capable of disjoining corked ions from the functionalized nanotube openings, triggering in this way a potential cargo release stored inside the nanotubes.
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Affiliation(s)
- M Druchok
- Institute for Condensed Matter Physics, 1 Svientsitskii Str., 79011 Lviv, Ukraine
| | - M Lukšič
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Veˇna pot 113, SI-1000 Ljubljana, Slovenia
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12
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Sun P, Huang K, Liu H. Competitive Adsorption of Ions at the Oil-Water Interface: A Possible Mechanism Underlying the Separation Selectivity for Liquid-Liquid Solvent Extraction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13155-13161. [PMID: 30346781 DOI: 10.1021/acs.langmuir.8b02691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Adsorption, especially competitive adsorption of ions at the interfaces, governs a wealth of physicochemical processes. Understanding the mechanism behind these interfacial behaviors is crucial for developing novel strategies to intensify reactions or transfer processes. Herein, as an example, we found that in the case of liquid-liquid transport of V(V) and Cr(VI) ions, the competitive adsorption of V(V) and Cr(VI) ions against coexisting SO42- ions at the oil-water interface exhibits a significant impact on the selective separation behaviors of V(V) and Cr(VI) ions. The transport of Cr(VI) ions would be hindered by adding Na2SO4 into the aqueous solutions because of the competitive adsorption of SO42- ions at the interface being stronger than that of Cr(VI) ions, whereas the transport of V(V) ions would not be affected because of the stronger affinity of V(V) ions to the interfaces compared to that of SO42- ions. The present work provides new inspirations for developing efficient strategies to improve the separation efficiency of target ions with similar physic-chemical properties by regulating their adsorption behaviors at the interface. It is beneficial to get a deeper understanding into the microscopic nature of competitive adsorption behaviors of ions at interfaces from the interface-molecular level.
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Affiliation(s)
- Pan Sun
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering , Chinese Academy of Sciences , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Kun Huang
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering , Chinese Academy of Sciences , Beijing 100190 , P. R. China
- School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing , Beijing 100083 , P. R. China
| | - Huizhou Liu
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering , Chinese Academy of Sciences , Beijing 100190 , P. R. China
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13
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Zhao X, Zhang D, Yu R, Chen S, Zhao D. Tetrahydrosalen Uranyl(VI) Complexes: Crystal Structures and Solution Binding Study. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701401] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiao Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS); Department of Applied Chemistry; Centre for Soft Matter Science and Engineering; Key Lab of Polymer Chemistry & Physics of Ministry of Education; College of Chemistry; Peking University; 100871 Beijing P. R. China
| | - Di Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS); Department of Applied Chemistry; Centre for Soft Matter Science and Engineering; Key Lab of Polymer Chemistry & Physics of Ministry of Education; College of Chemistry; Peking University; 100871 Beijing P. R. China
| | - Ren Yu
- Beijing Research Institute of Chemical Engineering and Metallurgy; 101149 Beijing P. R. China
| | - Shusen Chen
- Beijing Research Institute of Chemical Engineering and Metallurgy; 101149 Beijing P. R. China
| | - Dahui Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS); Department of Applied Chemistry; Centre for Soft Matter Science and Engineering; Key Lab of Polymer Chemistry & Physics of Ministry of Education; College of Chemistry; Peking University; 100871 Beijing P. R. China
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14
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Guilbaud P, Berthon L, Louisfrema W, Diat O, Zorz N. Determination of the Structures of Uranyl-Tri-n-butyl-Phosphate Aggregates by Coupling Experimental Results with Molecular Dynamic Simulations. Chemistry 2017; 23:16660-16670. [PMID: 28971546 DOI: 10.1002/chem.201703967] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Indexed: 11/10/2022]
Abstract
The complex structure of a plutonium uranium refining by extraction (PUREX) process organic phase was characterized by combining results from experiments and molecular dynamics simulations. For the first time, the molecular interactions between tri-n-butyl phosphate (TBP) and the extracted solutes, as well as TBP aggregation after the extraction of water and/or uranyl nitrate, were described and analyzed concomitantly. Coupling molecular dynamics simulations with small- and wide-angle X-ray scattering (SWAXS) experiments can lead to simulated organic solutions that are representative of the experimental ones, even for high extractant and solute concentrations. Furthermore, this coupling is well adapted for the interpretation of SWAXS experiments without preliminary hypothesis on the size or shape of aggregates. The results link together previous literature studies obtained for each level of depiction separately (complexation or aggregation). Without uranium, or at low metal concentration, almost no aggregation was observed. At high uranium concentration, organic phases contain small [UO2 (NO3 )2 (TBP)2 ]n polymetallic aggregates (with n=2 to 4), in which the 1:2 U/TBP stoichiometry is preserved.
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Affiliation(s)
- Phillipe Guilbaud
- CEA, Nuclear Energy Division, Research Department, on Mining and Fuel Recycling Processes (SPDS/LILA), BP17171, 30207, Bagnols-sur-Cèze, France
| | - Laurence Berthon
- CEA, Nuclear Energy Division, Research Department, on Mining and Fuel Recycling Processes (SPDS/LILA), BP17171, 30207, Bagnols-sur-Cèze, France
| | - Wilfried Louisfrema
- CEA, Nuclear Energy Division, Research Department, on Mining and Fuel Recycling Processes (SPDS/LILA), BP17171, 30207, Bagnols-sur-Cèze, France
| | - Olivier Diat
- Institut de Chimie Séparative de Marcoule (ICSM/ UMR 5257), CEA/CNRS/UM/ENSCM, BP17171, 30206, Bagnols-sur-Cèze, France
| | - Nicole Zorz
- CEA, Nuclear Energy Division, Research Department, on Mining and Fuel Recycling Processes (SPDS/LILA), BP17171, 30207, Bagnols-sur-Cèze, France
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15
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Jing Y, Chen J, Chen L, Su W, Liu Y, Li D. Extraction Behaviors of Heavy Rare Earths with Organophosphoric Extractants: The Contribution of Extractant Dimer Dissociation, Acid Ionization, and Complexation. A Quantum Chemistry Study. J Phys Chem A 2017; 121:2531-2543. [DOI: 10.1021/acs.jpca.7b01444] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Jing
- (State Key Laboratory of
Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Ji Chen
- (State Key Laboratory of
Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Li Chen
- (State Key Laboratory of
Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Wenrou Su
- (State Key Laboratory of
Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Yu Liu
- (State Key Laboratory of
Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Deqian Li
- (State Key Laboratory of
Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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16
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Druchok M, Holovko M. Carbon nanotubes as adsorbents for uranyl ions from aqueous solutions: A molecular dynamics study. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2016.09.093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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17
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Qiao B, Ferru G, Ellis RJ. Complexation Enhancement Drives Water-to-Oil Ion Transport: A Simulation Study. Chemistry 2016; 23:427-436. [DOI: 10.1002/chem.201604470] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Indexed: 01/14/2023]
Affiliation(s)
- Baofu Qiao
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne Illinois 60439 USA
| | - Geoffroy Ferru
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne Illinois 60439 USA
| | - Ross J. Ellis
- Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne Illinois 60439 USA
- Chemical Sciences Division; Oak Ridge National Laboratory; Oak Ridge Tennessee 37831 USA
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18
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Scoppola E, Watkins EB, Campbell RA, Konovalov O, Girard L, Dufrêche J, Ferru G, Fragneto G, Diat O. Solvent Extraction: Structure of the Liquid–Liquid Interface Containing a Diamide Ligand. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603395] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ernesto Scoppola
- Institut Laue-Langevin 38000 Grenoble France
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
| | - Erik B. Watkins
- Institut Laue-Langevin 38000 Grenoble France
- Materials Synthesis and Integrated DevicesLos Alamos National Laboratory Los Alamos NM 87545 USA
| | | | - Oleg Konovalov
- European Synchrotron Radiation Facility 38430 Grenoble France
| | - Luc Girard
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
| | - Jean‐Francois Dufrêche
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
| | | | | | - Olivier Diat
- Institut de Chimie Séparative de MarcouleUMR 5257 CEA/CNRS/ENSCM/Université Montpellier 30207 Bagnols-sur-Cèze France
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19
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Scoppola E, Watkins EB, Campbell RA, Konovalov O, Girard L, Dufrêche JF, Ferru G, Fragneto G, Diat O. Solvent Extraction: Structure of the Liquid-Liquid Interface Containing a Diamide Ligand. Angew Chem Int Ed Engl 2016; 55:9326-30. [PMID: 27320727 DOI: 10.1002/anie.201603395] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Indexed: 11/09/2022]
Abstract
Knowledge of the (supra)molecular structure of an interface that contains amphiphilic ligand molecules is necessary for a full understanding of ion transfer during solvent extraction. Even if molecular dynamics already yield some insight in the molecular configurations in solution, hardly any experimental data giving access to distributions of both extractant molecules and ions at the liquid-liquid interface exist. Here, the combined application of X-ray and neutron reflectivity measurements represents a key milestone in the deduction of the interfacial structure and potential with respect to two different lipophilic ligands. Indeed, we show for the first time that hard trivalent cations can be repelled or attracted by the extractant-enriched interface according to the nature of the ligand.
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Affiliation(s)
- Ernesto Scoppola
- Institut Laue-Langevin, 38000, Grenoble, France.,Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France
| | - Erik B Watkins
- Institut Laue-Langevin, 38000, Grenoble, France.,Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | | | - Oleg Konovalov
- European Synchrotron Radiation Facility, 38430, Grenoble, France
| | - Luc Girard
- Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France
| | - Jean-Francois Dufrêche
- Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France
| | | | | | - Olivier Diat
- Institut de Chimie Séparative de Marcoule, UMR 5257 CEA/CNRS/ENSCM/Université Montpellier, 30207, Bagnols-sur-Cèze, France.
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20
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Benay G, Wipff G. Liquid–liquid extraction of alkali cations by 18-crown-6: complexation and interface crossing studied by MD and PMF simulations. NEW J CHEM 2016. [DOI: 10.1039/c5nj02609a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The 18C6/M+Pic−complexes form and adsorb “right at the nano-interface” where 18C6 prefers the K+guest.
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Affiliation(s)
- Gael Benay
- Laboratoire MSM
- UMR 7140
- Institut de Chimie
- 67000 Strasbourg
- France
| | - Georges Wipff
- Laboratoire MSM
- UMR 7140
- Institut de Chimie
- 67000 Strasbourg
- France
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21
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Ban Y, Hotoku S, Tsutsui N, Tsubata Y, Matsumura T. Distribution Behavior of Neptunium by Extraction withN,N-dialkylamides (DEHDMPA and DEHBA) in Mixer-Settler Extractors. SOLVENT EXTRACTION AND ION EXCHANGE 2015. [DOI: 10.1080/07366299.2015.1130423] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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23
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24
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Sieffert N, Wipff G. Uranyl extraction by N,N-dialkylamide ligands studied using static and dynamic DFT simulations. Dalton Trans 2015; 44:2623-38. [DOI: 10.1039/c4dt02443e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT/MM-MD simulations highlight the structure and dynamics of mixed uranyl/nitrato/monoamides (L) complexes at an “oil”/water interface.
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Affiliation(s)
| | - Georges Wipff
- UMR 7177 CNRS
- Laboratoire MSM
- Institut de Chimie
- Université de Strasbourg
- 67000 Strasbourg
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25
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Verma S, Dutta RK. A facile method of synthesizing ammonia modified graphene oxide for efficient removal of uranyl ions from aqueous medium. RSC Adv 2015. [DOI: 10.1039/c5ra10555b] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Adsorption of uranyl ions on NH3 modified graphene oxide at pH 6.
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Affiliation(s)
- Swati Verma
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Raj Kumar Dutta
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
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26
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Bodo E, Chiricotto M, Spezia R. Structural, energetic, and electronic properties of La(III)-dimethyl sulfoxide clusters. J Phys Chem A 2014; 118:11602-11. [PMID: 25405769 DOI: 10.1021/jp507312y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By using accurate density functional theory calculations, we have studied the cluster complexes of a La(3+) ion interacting with a small number of dimethyl sulfoxide (DMSO) molecules of growing size (from 1 to 12). Extended structural, energetic, and electronic structure analyses have been performed to provide a complete picture of the physical properties that are the basis of the interaction of La(III) with DMSO. Recent experimental data in the solid and liquid phase have suggested a coordination number of 8 DMSO molecules with a square antiprism geometry arranged similarly in the liquid and crystalline phases. By using a cluster approach on the La(3+)(DMSO)n gas phase isolated structures, we have found that the 8-fold geometry, albeit less regular than in the crystal, is probably the most stable cluster. Furthermore, we provide new evidence of a 9-fold complexation geometric arrangement that is competitive (at least energetically) with the 8-fold one and that might suggest the existence of transient structures with higher coordination numbers in the liquid phase.
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Affiliation(s)
- Enrico Bodo
- Department of Chemistry, University of Rome "La Sapienza" , 00185 Rome, Italy
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27
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Benay G, Wipff G. Ammonium Recognition by 18-Crown-6 in Different Solutions and at an Aqueous Interface: A Simulation Study. J Phys Chem B 2014; 118:13913-29. [DOI: 10.1021/jp508379w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. Benay
- Laboratoire MSM, UMR 7177, Institut de Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
| | - G. Wipff
- Laboratoire MSM, UMR 7177, Institut de Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
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28
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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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29
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Verma PK, Kumari N, Pathak PN, Sadhu B, Sundararajan M, Aswal VK, Mohapatra PK. Investigations on preferential Pu(IV) extraction over U(VI) by N,N-dihexyloctanamide versus tri-n-butyl phosphate: evidence through small angle neutron scattering and DFT studies. J Phys Chem A 2014; 118:3996-4004. [PMID: 24815040 DOI: 10.1021/jp503037q] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Straight chain amide N,N-dihexyloctanamide (DHOA) has been found to be a promising alternative extractant to tri-n-butyl phosphate (TBP) for the reprocessing of irradiated uranium- and thorium-based fuels. Unlike TBP, DHOA displays preferential extraction of Pu(IV) over U(VI) at higher acidities (≥3 M HNO3) and poor extraction at lower acidities. Density functional theory (DFT) based calculations have been carried out on the structures and relative binding energies of U(VI) and Pu(IV) with the extractant molecules. These calculations suggest that the differential hardness of the two extractants is responsible for the preferential binding/complexation of TBP to uranyl, whereas the softer DHOA and the bulky nature of the extractant lead to stronger binding/complexation of DHOA to Pu(IV). In conjunction with quantum chemical calculations, small angle neutron scattering (SANS) measurements have also been performed for understanding the stoichiometry of the complex formed that leads to relatively lower extraction of Th(IV) (a model for Pu(IV)) as compared to U(VI) using DHOA and TBP as the extractants. The combined experimental and theoretical studies helped us to understand the superior complexation/extraction behavior of Pu(IV) over U(VI) with DHOA.
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Affiliation(s)
- P K Verma
- Radiochemistry Division, ‡Radiation Safety Systems Division, §Theoretical Chemistry Section, and ∥Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India
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30
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Benay G, Wipff G. Liquid–Liquid Extraction of Uranyl by TBP: The TBP and Ions Models and Related Interfacial Features Revisited by MD and PMF Simulations. J Phys Chem B 2014; 118:3133-49. [DOI: 10.1021/jp411332e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- G. Benay
- Laboratoire MSM, UMR 7177, Institut de
Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
| | - G. Wipff
- Laboratoire MSM, UMR 7177, Institut de
Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
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