Tailoring phase modifiers for selective uranium extraction: conventional and phosphate ores
Abstract
. 5 vol% industrial conditions), while in Mine B, U/Mo increases from 377 to 1459 at 22 vol%, with optimal U/Zr selectivity between 10-50 vol%. In contrast, the phosphate-based Mine C exhibits a weakly structured organic phase, with dimer-dominated extractant species and limited sensitivity to phase modifier addition; optimal selectivity is achieved at low modifier content, where 2 vol% EXXAL 13 increases the U/Fe ratio from 61 to 214. These results highlight the importance of system-specific phase modifier optimization for maximizing uranium selectivity. SAXS analysis further reveals that extractant molecules self-assemble into reverse aggregates whose structure and inter-aggregate interactions are strongly influenced by phase modifier concentration. Crucially, these structural modifications directly correlate with selectivity variations, demonstrating that phase modifier effects are fundamentally mediated through changes in extractant aggregation in the organic phase.
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BibTeX
@article{gautier2026tailoring,
title = {{Tailoring phase modifiers for selective uranium extraction: conventional and phosphate ores}},
author = {M. Gautier and J. Lin and E. Guerinoni and L. Daronnat and S. Pellet-Rostaing and S. Dourdain},
journal = {Dalton Transactions},
year = {2026},
month = nov,
doi = {10.1039/d6dt01684g},
url = {https://hal.science/hal-05856779v1},
note = {CC BY-NC},
}
RIS
TY - JOUR
TI - Tailoring phase modifiers for selective uranium extraction: conventional and phosphate ores
AU - M. Gautier
AU - J. Lin
AU - E. Guerinoni
AU - L. Daronnat
AU - S. Pellet-Rostaing
AU - S. Dourdain
PY - 2026
DA - 2026/11/09
JO - Dalton Transactions
DO - 10.1039/d6dt01684g
UR - https://hal.science/hal-05856779v1
AB - . 5 vol% industrial conditions), while in Mine B, U/Mo increases from 377 to 1459 at 22 vol%, with optimal U/Zr selectivity between 10-50 vol%. In contrast, the phosphate-based Mine C exhibits a weakly structured organic phase, with dimer-dominated extractant species and limited sensitivity to phase modifier addition; optimal selectivity is achieved at low modifier content, where 2 vol% EXXAL 13 increases the U/Fe ratio from 61 to 214. These results highlight the importance of system-specific phase modifier optimization for maximizing uranium selectivity. SAXS analysis further reveals that extractant molecules self-assemble into reverse aggregates whose structure and inter-aggregate interactions are strongly influenced by phase modifier concentration. Crucially, these structural modifications directly correlate with selectivity variations, demonstrating that phase modifier effects are fundamentally mediated through changes in extractant aggregation in the organic phase.
SN - 1477-9226
SN - 1477-9234
ER -