scholarly journals Extraction Selectivity of a Quaternary Alkylammonium Salt for Trivalent Actinides over Trivalent Lanthanides: Does Extractant Aggregation Play a Role?

2017 ◽  
Vol 35 (4) ◽  
pp. 266-279 ◽  
Author(s):  
Andrew W. Knight ◽  
Renato Chiarizia ◽  
L. Soderholm
Keyword(s):  
Trivalent Lanthanides ◽  
Alkylammonium Salt ◽  
Trivalent Actinides ◽  
Extraction Selectivity

scholarly journals Synthesis and characterization of a novel aminopolycarboxylate complexant for efficient trivalent f-element differentiation: N-butyl-2-acetamide-diethylenetriamine-N,N′,N′′,N′′-tetraacetic acid

2018 ◽  
Vol 47 (4) ◽  
pp. 1092-1105 ◽  
Author(s):  
Colt R. Heathman ◽  
Travis S. Grimes ◽  
Santa Jansone-Popova ◽  
Alexander S. Ivanov ◽  
Vyacheslav S. Bryantsev ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Tetraacetic Acid ◽  
Aqueous Mixtures ◽  
Trivalent Lanthanides ◽  
Trivalent Actinides

Novel aminopolycarboxylate complexant N-butyl-2-acetamide-diethylenetriamine-N,N′,N′′,N′′-tetraacetic acid was synthesized to discriminate trivalent actinides from trivalent lanthanides in aqueous mixtures of unconventional acidity.

scholarly journals Opportunities and challenges of applying advanced X-ray spectroscopy to actinide and lanthanide N-donor ligand systems

2022 ◽  
Vol 29 (1) ◽  
Author(s):  
Tim Pruessmann ◽  
Peter Nagel ◽  
Laura Simonelli ◽  
David Batchelor ◽  
Robert Gordon ◽  
...  
Keyword(s):  
Donor Ligands ◽  
Physical Processes ◽  
Edge Structure ◽  
Donor Ligand ◽  
X Ray ◽  
Trivalent Lanthanides ◽  
Novel Technique ◽  
Trivalent Actinides ◽  
Spectroscopy Studies ◽  
X Ray Absorption

N-donor ligands such as n-Pr-BTP [2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine] preferentially bind trivalent actinides (An3+) over trivalent lanthanides (Ln3+) in liquid–liquid separation. However, the chemical and physical processes responsible for this selectivity are not yet well understood. Here, an explorative comparative X-ray spectroscopy and computational (L 3-edge) study for the An/Ln L 3-edge and the N K-edge of [An/Ln(n-Pr-BTP)3](NO3)3, [Ln(n-Pr-BTP)3](CF3SO3)3 and [Ln(n-Pr-BTP)3](ClO4)3 complexes is presented. High-resolution X-ray absorption near-edge structure (HR-XANES) L 3-edge data reveal additional features in the pre- and post-edge range of the spectra that are investigated using the quantum chemical codes FEFF and FDMNES. X-ray Raman spectroscopy studies demonstrate the applicability of this novel technique for investigations of liquid samples of partitioning systems at the N K-edge.

‘CMPO-substituted’ calix[4]arenes, extractants with selectivity among trivalent lanthanides and between trivalent actinides and lanthanides

1998 ◽  
pp. 1627-1628 ◽  
Author(s):  
Lætitia H. Delmau ◽  
Nicole Simon ◽  
Jean-François Dozol ◽  
Serge Eymard ◽  
Bernard Tournois ◽  
...  
Keyword(s):  
Trivalent Lanthanides ◽  
Trivalent Actinides

Synthesis of a Water-Soluble, Soft N-Donor BTzBP Ligand Containing Only CHON

Synlett ◽  
2020 ◽  
Vol 31 (14) ◽  
pp. 1384-1388
Author(s):  
Seth J. Friese ◽  
Samantha A. Labb ◽  
Conner J. Masteran ◽  
Savannah G. Albright ◽  
Bakr Ali ◽  
...  
Keyword(s):  
Spent Nuclear Fuel ◽  
Chemical Properties ◽  
Water Soluble ◽  
Donor Ligands ◽  
Binding Affinities ◽  
Soluble Groups ◽  
Trivalent Lanthanides ◽  
Trivalent Actinides ◽  
Physical And Chemical ◽  
And Chemical Properties

A hydrophilic ligand that contains only C, H, O, and N substituents and uses a 6,6′-bis(1H-1,2,3-triazol-4-yl)-2,2′-bipyridine (BTzBP) structural core has been synthesized. The effect of adding water-soluble groups onto extractant ligands has been extensively studied to facilitate the efficient partitioning of 4f and transuranic 5f elements for the treatment of spent nuclear fuel. Soft, N-donor ligands exhibit greater binding affinities for the trivalent actinides over the trivalent lanthanides, making BTzBP ligands an ideal candidate in the search for extractants to be used on an industrial scale. To date, hydrophobic BTzBPs have been shown to exhibit physical and chemical properties that might be conducive to nuclear waste processing conditions. However, hydrophilic BTzBPs have yet to be reported. Herein, we show the synthesis of a hydrophilic BTzBP ligand featuring cationic water solubilizing groups attached to the bipyridal rings.

First Report on the Separation of Trivalent Lanthanides from Trivalent Actinides Using an Aqueous Soluble Multiple N-Donor Ligand, 2,6-bis(1H-tetrazol-5-yl)pyridine: Extraction, Spectroscopic, Structural, and Computational Studies

2018 ◽  
Vol 57 (9) ◽  
pp. 5096-5107 ◽  
Author(s):  
Arunasis Bhattacharyya ◽  
Trilochan Gadly ◽  
Avinash S. Kanekar ◽  
Sunil K. Ghosh ◽  
Mukesh Kumar ◽  
...  
Keyword(s):  
Computational Studies ◽  
Donor Ligand ◽  
First Report ◽  
Trivalent Lanthanides ◽  
Trivalent Actinides

Demonstration of a continuous counter-current extraction process based on a non-heterocyclic N-donor ligand NTAamide(n-Oct) for trivalent actinides/lanthanides separation

2021 ◽  
pp. 118285
Author(s):  
Zhipeng Wang ◽  
Fengfeng Li ◽  
Xueyu Wang ◽  
Bin Li ◽  
Lianjun Song ◽  
...  
Keyword(s):  
Extraction Process ◽  
Donor Ligand ◽  
Trivalent Actinides ◽  
Counter Current

scholarly journals Gamma and pulsed electron radiolysis studies of CyMe4BTBP and CyMe4BTPhen: Identification of radiolysis products and effects on the hydrometallurgical separation of trivalent actinides and lanthanides

2021 ◽  
pp. 109696
Author(s):  
Holger Schmidt ◽  
Andreas Wilden ◽  
Giuseppe Modolo ◽  
Dirk Bosbach ◽  
Beatrix Santiago-Schübel ◽  
...  
Keyword(s):  
Radiolysis Products ◽  
Trivalent Actinides

Energy level location of divalent and trivalent lanthanides in calcium aluminosilicate materials

2021 ◽  
Author(s):  
Nguyen Ngoc Trac ◽  
Ho Van Tuyen ◽  
Le Van Khoa Bao ◽  
Nguyen Ha Vi ◽  
A. N. H. Thuan
Keyword(s):  
Energy Level ◽  
Trivalent Lanthanides ◽  
Calcium Aluminosilicate

Chelator-assisted high performance liquid chromatographic separation of trivalent lanthanides and actinides

2021 ◽  
Author(s):  
Roger M. Pallares ◽  
Solène Hébert ◽  
Manuel Sturzbecher-Hoehne ◽  
Rebecca J. Abergel
Keyword(s):  
Chromatographic Separation ◽  
High Performance ◽  
Chelating Agent ◽  
High Performance Liquid Chromatographic ◽  
Trivalent Lanthanides ◽  
Liquid Chromatographic Separation ◽  
Liquid Chromatographic ◽  
Trivalent Actinide

3,4,3-LI(1,2-HOPO) can be used as a HPLC chelating agent, promoting lanthanide and trivalent actinide separation without column modifications.

The extraction of trivalent actinides and lanthanides by a novel unsymmetrical diglycolamide

2021 ◽  
Author(s):  
Xihong He ◽  
Xinyao Wang ◽  
Yaru Cui ◽  
Zhe Su ◽  
Guoan Ye ◽  
...  
Keyword(s):  
Trivalent Actinides
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