Electrochemical behaviour of the LiF-(CaF2)-La2O3 system

被引：0
作者：
Marta Ambrová
Jana Jurišová
Alexandra Sýkorová
Dalibor Uher
Vladimír Danielik
Ján Híveš
机构：
[1] Slovak University of Technology,Institute of Inorganic Chemistry, Technology and Materials
来源：
Chemical Papers | 2008年 / 62卷
关键词：
lanthanum; molten fluorides; cyclic voltammetry; spent nuclear fuel;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The electrochemical behaviour of the LiF-La2O3 and LiF-CaF2-La2O3 systems was investigated by means of cyclic voltammetry. Several types of working electrodes (spectrographic pure graphite, W, Mo, Ni, Cu) were used. It was found that chemical reactions take place in the system during the dissolution of lanthanum oxide. The reduction of lithium cations occurred at the most positive potential from the species formed in the melt on ‘inert’ cathodes (W, Mo). The reactive cathodes (Cu, Ni) allowed the lanthanum deposition with depolarisation.
引用
收藏
页码：154 / 159
页数：5
相关论文
共 35 条
[1]  
Berul S. I.(1963)The reactions between CeO Zhurnal Neorganicheskoi Khimii 8 1431-1436
[2]  
Voskresenskaya N. K.(2007), NdO Journal of Nuclear Materials 360 25-31
[3]  
Caravaca C.(2007), SmO Journal of Nuclear Materials 360 32-42
[4]  
de Córdoba G.(2007), and molten fluorides Journal of Nuclear Materials 360 64-74
[5]  
Tomás M. J.(1999)Electrochemical behaviour of gadolinium ion molten LiCl-KCl eutectic Zhurnal Neorganicheskoi Khimii 44 1703-1727
[6]  
Rosado M.(2004)Application of electrochemical techniques in pyrochemical processes. — Electrochemical behaviour of rare earths at W, Cd, Bi, and Al electrodes Electrochimica Acta 49 4467-4476
[7]  
Castrillejo Y.(2005)Feasibility of the electrochemical way in molten fluorides for separating thorium and lanthanides and extracting lanthanides from the solvent Electrochimica Acta 50 5510-5517
[8]  
Bermejo M. R.(2001)Systems of alkali and rare-earth metal fluorides Electrochimica Acta 46 2665-2670
[9]  
Martínez A. M.(1985)Neodymium(III) cathodic processes in molten fluorides Journal of the Less-Common Metals 113 89-101
[10]  
Barrado E.(2003)Cathodic behaviour of samarium(III) in LiF-CaF Journal of Mining and Metallurgy, Section B: Metallurgy 39 177-200
1234