Electrochemical Studies of LaCl3 and GdCl3 Dissolved in Fused LiCl‐KCl

Autor: Y. Berghoute, Frédéric Lantelme
Rok vydání: 1999
Předmět:
Zdroj: Journal of The Electrochemical Society. 146:4137-4144
ISSN: 1945-7111
0013-4651
DOI: 10.1149/1.1392604
Popis: Molten systems are important as reaction media for the winning of strong oxidation or reducing elements such as fluorine, alkaline, and alkaline earth metals and aluminum. Recently, fused salt electrochemistry has been used for the preparation of refractory metals opening the way to the deposition of metals in solid state. The thermodynamic properties of solutions of lanthanum or gadolinium chlorides in mixed molten LiCl-KCl were determined by electromagnetic force (emf) measurements of LaCl{sub 3} or GdCl{sub 3} formation cells. The temperature dependence of the emf between 380 and 590 C was used to calculate the Gibbs energy and the enthalpy of formation of dissolved LaCl{sub 3} or GdCl{sub 3}. The electrode processes of La(III) and Gd(III) reduced on a tungsten electrode were investigated by cyclic voltammetry and chronopotentiometry.
Databáze: OpenAIRE