About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Alternative Methods of Measuring Optical Basicity in Molten Salts |
| Author(s) |
Jeremy T. Moon |
| On-Site Speaker (Planned) |
Jeremy T. Moon |
| Abstract Scope |
Optical basicity, assessed using the optical absorption of Pb²⁺ and Bi³⁺ probe ions, correlates with key physical and chemical properties of molten chlorides, including corrosion behavior. However, these probes absorb in the UV region, making them unusable in systems containing overlapping strongly absorbing species like U³⁺ or transition metal ions which are found in nuclear and solar thermal applications. This work explores alternative probe ions and methodologies suitable for such environments. We evaluate the nephelauxetic behavior of candidate ions and compare their spectral shifts to those of Pb²⁺ and Bi³⁺ in molten salts of varying basicity to assess their viability for basicity measurement. Our goal is to establish a reliable optical basicity scale using probes with transitions outside the UV range, expanding the applicability of this technique to complex molten halide systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Pyrometallurgy, Other |