| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Cathodic Behavior of Moisture in LiCl-KCl Eutectic Melt: Applications to Pyroprocessing |
| Author(s) |
Litun Swain, Gurudas Pakhui, Suddhasattwa Ghosh, Bandi Prabhakara Reddy |
| On-Site Speaker (Planned) |
Litun Swain |
| Abstract Scope |
In pyroprocessing technology, purity of LiCl-KCl eutectic melt with respect to moisture has to be ensured to avoid side reactions, corrosion of electrodes and low charge efficiency of electrodeposition process. Redox behavior of moisture in LiCl-KCl eutectic melt was investigated, and a two-point criterion was proposed to qualitatively assess purity of melts, which is based on Li+|Li onset potential and cathodic current density. This was subsequently applied to LiCl-KCl eutectic mixtures containing initially 2-8 wt.% moisture. This work gains importance in studying the influence of long-term storage on redox behavior of melts. It was observed that presence of moisture simultaneously led to formation of HCl, and both underwent a one-step one-electron reduction at similar potentials. Subsequent formation of hydroxide and oxide ions further deteriorated purity of the melt. Feasibility of preparing high purity eutectic melts from eutectic mixtures containing significant amounts of moisture was also explored in this work. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |