Evidence of Supramolecular Origin of Selectivity in Solvent Extraction of Bifunctional Amidophosphonate Extractants with Different Configurations

Critical fluctuations in liquid–liquid extraction organic phases controlled by extractant and diluent molecular structure

“…7,14–18 To that end, LLE systems are often modeled as microemulsions, where organic phase structure is treated as colloidal particles representing reverse micellar aggregates. 19–43…”

Solvent extraction of uranium from an acidic medium for the front-end of nuclear fuel cycle: from mechanisms understanding to innovative process design

“…The extraction mechanisms of two bifunctional extractants, differing only by the grafting of an alkyl chain between their two functions, were studied at molecular and supramolecular scales to investigate the origin of their very different separation factors for uranium and zirconium (Figure 12a) [114]. This investigation aimed to uncover the reasons behind their significantly different separation factors when it comes to uranium and zirconium.…”

Insights into water extraction and aggregation mechanisms of malonamide-alkane mixtures

“…Guided by small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) investigations, organic phase nanostructure is often conceptualized as reverse micellar particles where extractant molecules are hypothesized to solubilize extracted water, metal and acid in the polar core of the reverse micelle. 18,21,[30][31][32][33][34][35][36][37] However, our recent work on simplified binary extractant/diluent mixtures suggests that organic phase structure can be dominated by critical fluctuations associated with the third phase formation phase transition. 38,39 We also find the same temperature-dependent fluctuations that are consistent with pseudo-binary (3D Isinglike) critical exponents in complex, five-component organic phases containing extracted water, acid and metal ions.…”