17 research outputs found
Selective extraction of rare earth elements from acidic aqueous solutions with the help of a monoamide
Use of bifunctional compounds, with phosphonic acid/phosphonate and amine functions, to extract uranium (VI) from aqueous solutions of nitric acid
Compounds with phosphine oxide and amine functions as ligands for uranium(VI) extraction from aqueous solutions of sulfuric acid
Method for extracting tantalum and/or niobium from an acidic aqueous phase, and method intended for recovering tantalum and/or niobium from an acidic aqueous phase and implementing said extraction method
Organic-inorganic hybrid material of use for extracting uranium(VI) from aqueous media containing phosphoric acid
Processes for extracting and recovering tantalum present in an acid aqueous phase by means of an ionic liquid, and use of such an ionic liquid for extracting the tantalum from an acid aqueous phase
Ketone functionalized task specific ionic liquids for selective tantalum extraction
International audienceA novel family of ketone functionalized task specific ionic liquids (TSILs) was designed for the selective extraction of tantalum from sulfuric acid medium. We report the synthesis of functionalized hydrophobic ionic liquids based on piperidium, imidazolium or pyridinium cations bearing ketone moieties and their application in the liquid/liquid extraction of Ta(V). Recovery processes for Ta after extraction were performed and the recyclability of the TSIL was demonstrated. An eco-friendly process based on a TSIL was proposed for the extraction and stripping of tantalum from sulfuric acidic medium. Such system can be used as an alternative to the methyl-iso-butyl ketone (MIBK) which is the most commonly used extractant for the separation and purification of niobium and tantalum by solvent extractio