Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 8    No. 3    September 1998

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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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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