| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7043482 | Separation and Purification Technology | 2019 | 9 Pages |
Abstract
This work reports the synthesis of mesoporous silica impregnated by an acidic organophosphinic ligand (Cyanex 272) for the extraction of rare earth elements (REE). The prepared solid was characterized by X-ray diffraction (XRD), and N2 sorption at 77â¯K. The effect of pH, ligand loading, time and initial concentration on REE extraction were studied. Selectivity between light lanthanides (La), medium (Eu) and heavy lanthanides (Lu) followed the usual order Luâ¯>â¯Euâ¯>â¯La. The stoichiometry of the different species formed inside the porosity according to the conditions of the extraction (lanthanide nature and concentration; ligand loading) is proposed. The phosphinic ligand Cyanex 272 showed encouraging complexing properties in the porosity of the silica for its use in extraction and separation of rare earth metals.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Mohammedi Habib, Miloudi Hafida, Tayeb Abdelkader, Bertagnolli Caroline, Boos Anne,