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Citation: Liu Guan-Kun, Tong Ye-Xiang, Hong Hui-Chan, Yang Qi-Qin, Chen Sheng-Yang. Electroreduction of Yb(III) Ion on the Fe Cathode in Molten Chloride[J]. Acta Physico-Chimica Sinica, ;1998, 14(05): 463-466. doi: 10.3866/PKU.WHXB19980516 shu

Electroreduction of Yb(III) Ion on the Fe Cathode in Molten Chloride

1.
Institute of Physical Chemistry,School of Chemistry and Chemical Engineering,Zhongshan University,Guangzhou 510275

Received Date: 11 August 1997
Available Online: 15 May 1998

The line scanning voltammetry was used to study the electrochemical reaction of Yb(Ⅲ) in NaCl-KCl equimolar mixture on the Fe cathode. It was found that the reduction of Yb(Ⅲ) to yb(Ⅱ ) was realized on Fe electrode in the first step. Yb(Ⅱ ) was then reduced and formed alloys with Fe. The diffusion coefficients of Yb(Ⅲ) and Yb(Ⅱ ) in NaCl-KCl were determined to be 2.0× 10-5cm2. s- 1 and l .1 × 10-5cm2's- 1 at 760 ℃, respectively. The diffusion activation energy of Yb(Ⅲ ) was 66.0kJ•mol-1.
- Yb(III) ion,
- Electroreduction,
- Molten salt
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