| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
X-ray Absorption Studies to Elucidate Structure and Speciation of Metals in Molten Salt Systems |
| Author(s) |
Simerjeet Gill, Jiahao Huang, Julia Mausz, Kotaro Sasaki, Mehmet Topsakal, Ruchi Gakhar, William Phillips, Lingfeng He, Shannon Mahurin, Phillips Halstenberg, Lynne Ecker, Anatoly Frenkel |
| On-Site Speaker (Planned) |
Simerjeet Gill |
| Abstract Scope |
To facilitate robust and economical design of Molten Salt Reactor systems, fundamental understanding of structure and speciation of salts and metals is necessary. We utilize X-ray absorption to investigate local coordination environment and bonding of metal species in molten salt systems. Using a custom-designed in situ cell, we study Ni and Co dopants in ZnCl2 and their properties using Ni, Co and Zn K-edge spectra. Differences in behavior of Ni and Co systems are noted, where local structure around Ni varies from phase-segregated NiCl2 regions to single phase, substitutional Ni in ZnCl2 as temperature is increased above 500ºC to 700 ºC, while Co remains in single phase at same temperature range. XAS studies are complemented by optical absorption spectroscopy and transmission electron microscopy studies. This work was supported as part of Molten Salts in Extreme Environments, Energy Frontier Research Center, funded by the U.S. Department of Energy Office of Science. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |