About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Understanding the Structure of Complexes in Molten Salts Using Absorption Spectroscopy |
Author(s) |
Jeremy T. Moon, Dev Chidambaram |
On-Site Speaker (Planned) |
Jeremy T. Moon |
Abstract Scope |
The detection and prediction of the speciation and structure of lanthanide and actinide complexes in molten salts is vital to advanced molten salt nuclear technologies as the chemical form of dissolved actinide fuel and lanthanide fission products will affect solubility, thermophysical properties, and degradation of system components. Electronic and vibrational spectroscopy can yield information about the structure and speciation of these elements by probing electronic and vibrational transitions governed by quantum selection rules. We have fabricated a system to conduct absorption spectroscopy and Raman spectroscopy at high temperatures in an inert atmosphere glovebox. While most electronic and vibrational transitions in lanthanides are commonly considered to be relatively insensitive to the surrounding chemical environment, we will share our observation that some transitions are affected by temperature or the anion field surrounding the lanthanide cation and may yield information about the distortion of the complex.
Acknowledgments: DOE-NE, NRC, and NSF |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Pyrometallurgy, Other |