Synthesis and Evaluation of Lipophilic BTBP Ligands for An/Ln Separation in Nuclear Waste Treatment: The Effect of Alkyl Substitution on Extraction Properties and Implications for Ligand Design

Abstract

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Effective separation of Am(iii) and Eu(iii) from HNO3 solutions using CyMe4-BTPhen-functionalized silica-coated magnetic nanoparticles

“…1 One approach to this has resulted in the development of a combination of two partitioning processes to be applied to post PUREX raffinate. In the case of the minor actinides (Am and Cm) this requires their selective separation from the chemically similar trivalent lanthanides.…”

Exploring the Subtle Effect of Aliphatic Ring Size on Minor Actinide‐Extraction Properties and Metal Ion Speciation in Bis‐1,2,4‐Triazine Ligands

“…To gain further insight into the solution speciation of these ligands with metal ions and to rationalise the extraction results, we carried out some 1 H NMR titrations of the ligands with Y III and the diamagnetic lanthanides La III and Lu III . We have previously employed this method to investigate the solution speciation of the analogous ligands 2 and 3 , and related tetradentate ligands with trivalent lanthanides . We used deuterated acetonitrile due to the high cost of deuterated 1‐octanol and to compare with previous results for 2 and 3 …”

Synthesis and Screening oft-Bu-CyMe4-BTBP, and Comparison with CyMe4-BTBP

“…Complementary to the paucity of data on t-Bu-CyMe 4 -BTBP, [22,23,24] we present and discuss previously unpublished data, including synthesis. The screening data obtained has also been examined in the context of the precursor molecule, CyMe 4 -BTBP.…”

“…1; R' = R" = tert-Bu) unfortunately did not show improved solubility compared to CyMe 4 -BTBP, but its extraction kinetics were impaired. [23] Reducing the ability of a molecule to engage in attractive intermolecular interactions within a crystal lattice results in increased solubility. Consequently t-Bu-CyMe 4 -BTBP bearing only one additional alkyl group on one of the two pyridine rings was synthesized ( Fig.…”