熔盐电解氧化铈相关物质的分解电压

分解电压是探索电极过程机理和实际电解过程中电位控制的重要依据。计算了氧化铈在CeF3-LiF-MF2（M=Ba，Ca）熔体中石墨阳极上的理论分解电压。在石墨阳极上，阳极生成碳氧化合物的理论分解电压较小，反应较易发生；在惰性阳极下，理论分解电压按氧化铈、三氟化铈、氟化锂、氟化钡、氟化钙的顺序依次增大，氧化铈将优先发生分解反应。两种电极条件下，氧化铈的分解电压随温度升高而降低，随氧化铈浓度降低而增大，当氧化铈浓度过低时，容易发生阳极效应。

Decomposition voltages of CeO2 and solvents in molten salts electrolysis

Decomposition voltage is an important basis in the exploration of electrode process and in the potential control of actual electrolysis process.The theoretical decomposition voltages of CeO2 and solvents in CeF3-LiF-MF2 （M=Ba，Ca） molten system on the graphite anode were calculated.On the graphite anode，the theoretical decomposition voltage of anode generating carbon oxides was lower and the reaction took place easily；On the inert anode，the theoretical decomposition voltages increased sequentially，in the order of cerium oxide，cerium fluoride，lithium fluoride，barium fluoride，and calcium fluoride and decomposition reaction of cerium oxide will happen firstly.The decomposition voltages of CeO2 and solvents decreased with increment of the temperature and the concentration of CeO2 in the melt，and the anode effect will occur easily when the concentration of CeO2 was too low.