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Kimberlin A, Saint-Louis G, Guillaumont D, Camès B, Guilbaud P, Berthon L. Effect of Metal Complexation on Diglycolamides Radiolysis: A Comparison between Ex-Situ Gamma and In-Situ Alpha Irradiation. Phys Chem Chem Phys 2022; 24:9213-9228. [DOI: 10.1039/d1cp05731f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Radiolytic degradation is an important aspect to consider when developping a ligand or a complexant for radionucleides. Diglycolamide extractants (DGAs) have been playing an important role in many partition processes...
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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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Moreno Martinez D, Acher E, Vatin M, Dourdain S, Guillaumont D, Guilbaud P. Aggregation of Bifunctional Extractants Used for Uranium(VI) Separation. J Phys Chem B 2021; 125:10759-10771. [PMID: 34320806 DOI: 10.1021/acs.jpcb.1c03529] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DEHCNPB (butyl-N,N-di(2-ethylhexyl)carbamoyl-nonylphosphonate) is an amido-phosphonic acid that has remarkable properties for the separation of uranium from wet phosphoric acid. Despite previous studies, a detailed description of the DEHCNPB organic solutions at the supramolecular and molecular scales is missing. In the present work, we use classical Molecular Dynamics (MD) combined with SANS and SAXS experimental data in order to describe the aggregation of the bifunctional extractant DEHCNPB as well as the speciation of uranium(VI) in such systems. We provide a fine description of the molecular species in the organic solution and of the interactions within the aggregates formed, shedding light on solvent extraction mechanisms. Without uranium, the organic phase is highly composed of dimers and trimers H-bonded through phosphonate functions and without water molecules. With uranium, two to three extractant molecules coordinate directly the uranyl cation by their phosphonate groups. Uranyl is not fully dehydrated in this organic solution, and the amide groups of the extractants are found to form H-bonds with the water molecules bound to uranyl. These H-bond networks around the metallic cation stabilize the complexes and facilitate the extraction. These results underline the importance of considering weak interactions in the understanding of extraction processes and demonstrate how molecular simulations provide essential insights into such complex organic phase chemistry with a high number of species.
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Affiliation(s)
| | - Eléonor Acher
- CEA, DES, ISEC, DMRC, Univ Montpellier, Bagnols sur Ceze 30207, France
| | - Marin Vatin
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | | | | | - Philippe Guilbaud
- CEA, DES, ISEC, DMRC, Univ Montpellier, Bagnols sur Ceze 30207, France
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Artese A, Dourdain S, Boubals N, Dumas T, Solari PL, Menut D, Berthon L, Guilbaud P, Pellet-Rostaing S. Evidence of Supramolecular Origin of Selectivity in Solvent Extraction of Bifunctional Amidophosphonate Extractants with Different Configurations. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2021.1961433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Alexandre Artese
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | | | | | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | | | - Denis Menut
- Synchrotron SOLEIL, MARS Beamline, Gif Sur Yvette, France
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Kelly N, Doert T, Hennersdorf F, Gloe K. Synergistic lanthanide extraction triggered by self-assembly of heterodinuclear Zn(II)/Ln(III) Schiff base/carboxylic acid complexes. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2021.1876383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Norman Kelly
- Department of Process Metallurgy, Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany
- TU Dresden, School of Sciences, Faculty of Chemistry and Food Chemistry, Dresden, Germany
| | - Thomas Doert
- TU Dresden, School of Sciences, Faculty of Chemistry and Food Chemistry, Dresden, Germany
| | - Felix Hennersdorf
- TU Dresden, School of Sciences, Faculty of Chemistry and Food Chemistry, Dresden, Germany
| | - Karsten Gloe
- TU Dresden, School of Sciences, Faculty of Chemistry and Food Chemistry, Dresden, Germany
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Artese A, Dourdain S, Felines N, Arrachart G, Boubals N, Guilbaud P, Pellet-Rostaing S. Bifunctional Amidophosphonate Molecules for Uranium Extraction in Nitrate Acidic Media. SOLVENT EXTRACTION AND ION EXCHANGE 2020. [DOI: 10.1080/07366299.2020.1790527] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. Artese
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
- CEA, DES, ISEC, DMRC, University Montpellier, Marcoule, France
| | - S. Dourdain
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - N. Felines
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - G. Arrachart
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - N. Boubals
- CEA, DES, ISEC, DMRC, University Montpellier, Marcoule, France
| | - P. Guilbaud
- CEA, DES, ISEC, DMRC, University Montpellier, Marcoule, France
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Dirks T, Dumas T, Solari PL, Charbonnel MC. Ruthenium Nitrosyl Structure in Solvent Extraction Systems: A Comparison of Tributyl Phosphate, Tetrabutyl Urea, N-Methyl, N-Octyl Ethylhexanamide, and N, N, N′, N′-Tetraoctyl Diglycolamide. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02555] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Thomas Dirks
- CEA, DEN, DMRC, Univ Montpellier, Marcoule, France
| | - Thomas Dumas
- CEA, DEN, DMRC, Univ Montpellier, Marcoule, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L’Orme des Merisiers, BP 48, St Aubin, 91192, Gif sur Yvette, France
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Duvail M, Dumas T, Paquet A, Coste A, Berthon L, Guilbaud P. UO22+ structure in solvent extraction phases resolved at molecular and supramolecular scales: a combined molecular dynamics, EXAFS and SWAXS approach. Phys Chem Chem Phys 2019; 21:7894-7906. [DOI: 10.1039/c8cp07230b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a polarizable force field for unraveling the UO22+ structure in both aqueous and solvent extraction phases.
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Charlot A, Dumas T, Solari PL, Cuer F, Grandjean A. A Spectroscopic Study of Uranium and Molybdenum Complexation within the Pore Channels of Hybrid Mesoporous Silica. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601085] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexandre Charlot
- CEA DEN DTDC SPDE Laboratoire des Procédés Supercritiques de Séparation 30207 Bagnols‐sur‐Cèze France
- CEA DEN DTDC SPDE Laboratoire de Développement des Procédés de Séparation 30207 Bagnols‐sur‐Cèze France
| | - Thomas Dumas
- CEA DEN DTDC SPDE Laboratoire d'Interaction Ligands Actinides 30207 Bagnols‐sur‐Cèze France
| | - Pier L. Solari
- Synchrotron SOLEIL L'Orme des Merisiers Saint‐Aubin, BP 48 91192 Gif‐sur‐Yvette Cedex France
| | - Frédéric Cuer
- CEA DEN DTDC SPDE Laboratoire de Développement des Procédés de Séparation 30207 Bagnols‐sur‐Cèze France
| | - Agnès Grandjean
- CEA DEN DTDC SPDE Laboratoire des Procédés Supercritiques de Séparation 30207 Bagnols‐sur‐Cèze France
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