Electrical Conductivity of GdCl₃-Gd₂O₃ Molten System

Abstract

The electrical conductivity of GdCl3 chloride melts with the gadolinium oxide (Gd2O3) additions ranging from 0 to 5 mol % was measured depending on both the temperature and concentration of Gd2O3. The obtained temperature dependencies can be approximated by Arrhenius-type equation. The calculated effective activation energy values of electrical conductivity increase with the increasing concentration of Gd2O3 above 2.5 mol %. A decrease in the electrical conductivity of the chloride melts when adding the gadolinium oxide according to the Raman spectra data can be explained by the presence of [OGd3Cln] oxychloride associates.

Electrochemical and kinetic studies on the electrolytic extraction of Gd on Bi electrode in LiCl–KCl melt

“…In recent years, the demand for Gdcontaining materials such as reactor inhibitors, radiation shielding boards and medical diagnostic contrast agents, has increased significantly as a result of the ongoing promotion of global carbon emission reduction and the prevention and control of COVID-19. 11,12 However, the yield of Gd is restricted by extraction and preparation processes. Currently, calcium thermal reduction is the primary industrial-scale method for producing Gd.…”