中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 8 No. 3 September 1998 |
ELECTROREDUCTION OF Yb(Ⅲ) ON NICKEL CATHODE IN MOLTEN CHLORIDE
Liu Guankun, Tong Yexiang, Yang Qiqin, Hong Huichan and Chen Shengyang
（School of Chemistry and Chemical Engineering, Zhongshan University,Guangzhou 510275, P. R. China）
Abstract:The cyclic voltammetry, potential-time curve after potentiostatic electrolysis and X-ray diffraction were used to study the electrochemical reaction of Yb(Ⅲ) in NaCl∶KCl=1∶1(in mole) mixture on Ni cathode. The reduction of Yb(Ⅲ) to Yb(Ⅱ) was realized on Ni electrode at first step and Yb(Ⅱ) was reduced and alloyed with Ni on electrode surface respectively. The diffusion coefficient of Yb(Ⅲ) in NaCl-KCl-YbCl3is 1.25×10-5cm2/s at 973 K.
Key words: Yb(Ⅲ) electroreduction molten chloride
