Electrochemical and Microscopic Study of Thorium in a Molten Fluoride System

0445997 - ÚACH 2016 RIV US eng J - Článek v odborném periodiku
Straka, M. - Szatmary, L. - Šubrt, Jan
Electrochemical and Microscopic Study of Thorium in a Molten Fluoride System.
Journal of the Electrochemical Society. Roč. 162, č. 9 (2015), "D449"-"D456". ISSN 0013-4651. E-ISSN 1945-7111
Institucionální podpora: RVO:61388980
Klíčová slova: cyclic voltametry * electrolysis * thorium fluoride * thorium separation
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 3.014, rok: 2015

The electrochemistry of thorium in molten LiF-CaF2 was examined on inert (Mo) and reactive (Ni) electrodes at 1173 K using cyclic voltammetry and chronopotentiometry. A single-step reduction mechanism was observed on the Mo electrode. Voltammetric results show signs of irreversibility. The diffusion coefficient of Th(IV) ions was calculated from the chronopotentiometric data. Deposition of metallic thorium was verified from the electrolytic experiment and subsequent XRD and SEM analyses. The formation of Th-Ni alloys was confirmed on the Ni electrode using cyclic voltammetry, open-circuit chronopotentiometry and SEM + EDS analysis of the deposit after a short electrolysis.
Trvalý link: http://hdl.handle.net/11104/0248026