Home > Publications database > Complexation and Extraction Studies of Trivalent Actinides and Lanthanides with Water-Soluble and CHON-Compatible Ligands for the Selective Extraction of Americium > print

001     910340
005     20240712084623.0
024 7 _ |a 10.1021/acs.inorgchem.2c02871
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024 7 _ |a 0020-1669
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024 7 _ |a 1520-510X
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024 7 _ |a 2128/33451
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024 7 _ |a 36274232
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037 _ _ |a FZJ-2022-03759
041 _ _ |a English
082 _ _ |a 540
100 1 _ |a Weßling, Patrik
|0 0000-0002-4410-5344
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|e Corresponding author
245 _ _ |a Complexation and Extraction Studies of Trivalent Actinides and Lanthanides with Water-Soluble and CHON-Compatible Ligands for the Selective Extraction of Americium
260 _ _ |a Washington, DC
|c 2022
|b American Chemical Society
336 7 _ |a article
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520 _ _ |a Novel hydrophilic ligands to selectively separate Am(III) are synthesized: 3,3′-([2,2′-bipyridine]-6,6′-diylbis(1H-1,2,3-triazole-4,1-diyl))bis(propan-1-ol) (PrOH-BPTD) and 3,3′-([2,2′-bipyridine]-6,6′-diylbis(1H-1,2,3-triazole-4,1-diyl))bis(ethan-1-ol) (EtOH-BPTD). The complexation of An(III) and Ln(III) with PrOH- and EtOH-BPTD is studied by time-resolved laser fluorescence spectroscopy. [ML2]3+ is found for both Cm(III) and Eu(III), while [ML]3+ is only formed with Cm(III). Stability constants show a preferential coordination of Cm(III) over Eu(III) with PrOH-BPTD being the stronger ligand. The distribution of Am(III), Cm(III), and Ln(III) between an organic phase containing the extracting agent N,N,N′,N′-tetra-n-octyl-3-oxapentanediamide (TODGA) and aqueous phases containing PrOH-BPTD is studied as a function of time and temperature as well as the TODGA, BPTD, and HNO3 concentrations. A system composed of 0.2 mol/L TODGA and 0.04 mol/L PrOH-BPTD in 0.33–0.39 mol/L HNO3 allows for selective Am(III) back-extraction into the aqueous phase while keeping Cm(III) and Ln(III) in the organic phase, marking PrOH-BPTD as an excellent complexant for an optimized AmSel process (Am(III) selective extraction).
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700 1 _ |a Maag, Melina
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700 1 _ |a Baruth, Giana
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700 1 _ |a Sittel, Thomas
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700 1 _ |a Sauerwein, Fynn S.
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700 1 _ |a Wilden, Andreas
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700 1 _ |a Modolo, Giuseppe
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700 1 _ |a Geist, Andreas
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700 1 _ |a Panak, Petra J.
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773 _ _ |a 10.1021/acs.inorgchem.2c02871
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856 4 _ |y Published on 2022-10-23. Available in OpenAccess from 2023-10-23.
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