| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Sciences
|
| Presentation Title |
Impact of neodymium ions on the chemical kinetic behavior of radiolytic transients in molten LiCl-KCl-NdCl<sub>3</sub> salt mixtures. |
| Author(s) |
Stephanie Castro Baldivieso, Gregory P. Holmbeck, Ruchi Gakhar |
| On-Site Speaker (Planned) |
Stephanie Castro Baldivieso |
| Abstract Scope |
Pyrochemical reprocessing technologies can be used to recover valuable materials from used nuclear fuel (UNF), such as uranium. However, other critical materials, such as fission product neodymium, are challenging to recover from molten chloride eutectic mixtures (LiCl-KCl) due to the presence of multivalent states (Nd<sup>2+</sup>/Nd<sup>3+</sup>), disproportionation reactions, and re-dissolution in the molten chloride salt. Understanding, predicting, and controlling these processes is further complicated by the presence of ionizing radiation fields, for which little is known on the interaction of neodymium ions with the radiolytic transients (e<sub>s</sub><sup>–</sup> and Cl<sub>2</sub><sup>.–</sup>) in molten LiCl-KCl salt mixtures. Here, chemical kinetics, from integrated electron pulse irradiation and transient absorption spectroscopy, are presented for the reaction of Nd<sup>3+</sup> ions with e<sub>s</sub><sup>–</sup> and Cl<sub>2</sub><sup>.–</sup> as a function of temperature (400–600℃). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Pyrometallurgy, Nuclear Materials |