Study on the Electrodeoxidation of Solid Dy2O3 in Molten CaCl2

被引：2
|
作者：
Xie Hongwei [1 ]
Kim Pyonghun [1 ,2 ]
Wang Jinxia [3 ]
Zhai Yuchun [1 ]
Zou Xiangyu [1 ]
Lang Xiaochuan [1 ]
机构：
[1] Northeastern Univ, Sch Mat Sci & Met, Shenyang 110819, Peoples R China
[2] Kim Cheak Univ Technol, Sch Mat Sci, Pyonggang, North Korea
[3] North Eastern Univ, Sch Sci, Shenyang 110819, Peoples R China
来源：
CHEMICAL ENGINEERING AND MATERIAL PROPERTIES, PTS 1 AND 2 | 2012年 / 391-392卷
关键词：
Electrodeoxidation; Dy2O3; Dy; Molten CaCl2; DIRECT ELECTROCHEMICAL REDUCTION; CALCIUM-CHLORIDE; TITANIUM-DIOXIDE; CHROMIUM POWDER; OXIDES; NB2O5; MELT;
D O I：
10.4028/www.scientific.net/AMR.391-392.955
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The electrodeoxidation of Dy2O3 for preparing metal Dy in CaCl2 melt was studied by cyclic voltammetry, constant potential electrolysis techniques and thermodynamics analysis. Two electrodes system was employed during measuring cyclic voltammetry. Only one cathodic current peak(at about -1.75V) was discovered before the decomposition of CaCl2 which corresponded to the electrodeoxidation of Dy2O3 in the cyclic voltammograms in molten CaCl2 at 850 degrees C. The validity of the cyclic voltammograms was further confirmed by thermodynamics analysis and the CO2, CO anodic gas detected. In constant potential electrolysis products there were no other intermediates except Dy2O3 and Dy observed by XRD. And the results confirmed the following electrodeoxidation sequence: Dy2O3 -> Dy.
引用
收藏
页码：955 / +
页数：3
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