| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Optical Basicity Determination in Molten Chloride Salts |
| Author(s) |
Kailee Buttice, Qiufeng Yang, Ruchi Gakhar, Adrien Couet |
| On-Site Speaker (Planned) |
Kailee Buttice |
| Abstract Scope |
Optical basicity, derived from UV-Vis spectra of p-block transition metal ions in molten salt, depends primarily on free halide content. Studies on the bismuth probe in the ZnCl2-KCl system yield results similar to the AlCl3-KCl system as historically reported. The peak wavelength as a function of composition is nonlinear, indicating that basicity may not be linearly related to salt composition. ZnCl2 stabilizes lower Bi oxidation states (Bi+ and [Bi5]3+) rather than Bi3+. Increasing the ZnCl2 ratio and melt temperature decreases the peak absorption wavelength for Bi+, showing increased chloroacidity due to fewer available chloride ions. Zn has a tendency to form tetrahedral complexes and the melt's increased ionicity at higher temperatures contribute to this. Bi+ thus evidently serves as a probe for chlorobasicity. This research aims to create a basicity scale for molten halide salts to assess structural material corrosion and further investigation of Pb and Tl probes is planned. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Other, |