Monatshefte fur Chemie p. 157 - 166 (1981)
Update date:2022-08-11
Topics:
Zwilling, Gunter
The anodic overvoltage on carbon and platinum electrodes in the electrochemical production of high purity gadolinium from molten 75 LiF-25 molpercent GdF3 solutions is discussed.At the cell temperature of 840 deg C calciumimpregnated anodes led to the reduction of inert electrode films and to a current yield of nearly 100percent.The deposited gadolinium contained 75, 22, 54 and less than 100 ppm of the interstitial elements H, N, O and C respectively; the concentrations of the highest other analysed impurities were : Si(89), Fe(15), Y(5), Zr(3), Nd(3), Tb(71), Ta(49), W(23) and R e(< 3 ppm). - Keywords: Electrolysis of gadolinium fluoride; Fluorine overpotentials; Gadolinium, high purity
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