The development of innovative systems to capture REEs (Rare Earth Elements) from unconventional resources containing large backgrounds of Ca, Mg and Zn is of great importance to support growing technological innovations for a clean energy future. In contrast to conventional methods for extraction, we propose a mild, CO<sub>2</sub>-facilitated hydrometallurgical approach to extract REEs, like Ce, from unconventional materials with green solvents and mild acid and base. We have developed and studied how multidentate ligand systems to selectively extract Ce in the presence of large excesses of competing ions. We have isolated and studied the solution speciation, magnetic properties, redox properties, and electronic structure of the Ce-ligand complexes to understand how synthesize more effective molecular extractants. Furthermore, we have integrated the core components of the ligands onto magnetically recoverable hybrid nanomaterials. These types of nanomaterials can be used to eliminate the organic solvent and interface Ce capture and recovery with only an aqueous phase. The applications of these materials to selectively extract lanthanides in the presence of large quantities of competing ions will be discussed.

CO<sub>2</sub>-facilitated extraction and separation of Ce from unconventional resources

Fall 2022 abstracts, posters, and presentations will launch in mid-September.

ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

CO2-facilitated extraction and separation of Ce from unconventional resources

CO₂-facilitated extraction and separation of Ce from unconventional resources