Understanding the extraction mechanism, radiolytic stability and stripping behavior of thorium by ionic liquid based solvent systems: evidence of ‘ion-exchange’ and ‘solvation’ mechanism

Sorption properties of carbamoylmethylphosphonated-based polymer combining both sorption and thermosensitive properties: New valuable hydrosoluble materials for rare earth elements sorption

“…The increase of the ionic strength led to an increase of the transfer of the free Gd contained in solution to the functionalized polymer and confirmed the participation of NO3in the sorption mechanism. This behaviour was in agreement with a mechanisms of extraction of metals by solvation effect observed in solvent extraction [53], [54] and explained the general increase of Qe vs ionic strength. Concerning the break of slope (from 0.5 to 1.07), it may be related with a change in polymer solvation.…”

Ionic Liquid Assisted Exothermic Complexation of Trivalent Lanthanides with Fluorinated β Diketone: Multitechnique Approach with Theoretical Insight

“…−1­(Figure c, revealed that, for the transfer of each Nd complex from the aqueous to the organic (ionic liquid) phase, there was a counter transfer of one NTf 2 – from the ionic liquid phase to aqueous phase to maintain the charge neutrality. In other words, the Nd­(HFOD) 4 – complex is having mono negative charge and the anion exchange mechanism is operative. , This was further confirmed by the nondependence of the D Nd values as a function of varying C 6 mim•Br concentration in the aqueous phase (Figure d. The salient features of the spectra of the extracted species matched well with the deconvoluted ML 4 – spectra obtained from fitting the titration data, revealing that both the species are of Nd­(HFOD) 4 – .…”

“…Since the ML 2 as well as ML 4 complexes are either mono positive or mono negative in nature, they should be preferred in C 4 mim•NTf 2 as compared to in either C 6 mim•NTf 2 or C 8 mim•NTf 2 , which was reflected in their log β values. Similar preference of ionic metal–ligand species was reported in C 4 mim•NTf 2 , while neutral metal–ligand complexes were reported to be preferably extracted in liquid–liquid extraction in C 8 mim•NTf 2 …”