电解
锂(药物)
循环伏安法
坩埚(大地测量学)
材料科学
电化学
氯化锂
分析化学(期刊)
相(物质)
无机化学
阴极
金属
石墨
碱金属
化学
电极
冶金
物理化学
电解质
色谱法
有机化学
计算化学
内分泌学
医学
作者
Alexey V. Shishkin,V. Yu. Shishkin,Aleksandr A. Pankratov,A. A. Burdina,Yu. P. Zaikov
出处
期刊:Materials
[Multidisciplinary Digital Publishing Institute]
日期:2022-06-02
卷期号:15 (11): 3963-3963
被引量:9
摘要
The reduction of pellets composed of individual CeO2, Nd2O3 and a La2O3-Nd2O3-CeO2 mixture by lithium extracted on a cathode during lithium chloride electrolysis at 650 °C was studied. The methods of cyclic voltammetry, electron microscopy, including determination of the elemental composition of the studied objects, and X-ray diffraction analysis were applied for the present study. The reduction degree of rare-earth metal (REM) oxides was determined using both the bromine method and reduction melting of the samples in the graphite crucible. The formation of the metallic phase composed of the rare-earth elements (REEs) was not observed even at the cathode potentials, corresponding to the formation of the liquid alkali metal phase, and lithium extraction, which, in the quantitative ratio, exceeds greatly the values needed for the reduction reaction. CeO2 was found to reduce to Ce2O3.
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