The electrochemical reduction of two types of simplified simulants of vitrified radioactive waste, simulant 1 (glass component only: SiO₂, B₂O₃, Na₂O, Al₂O₃, CaO, Li₂O, and ZnO) and simulant 2 (also containing long-lived fission product oxides, ZrO₂, Cs₂O, PdO, and SeO₂), was investigated in molten CaCl₂ at 1103 K. The behavior of each element was predicted from the potential−pO²⁻ diagram constructed from thermodynamic data. After the immersion of simulant 1 into molten CaCl₂ without electrolysis, the dissolution of Na, Li, and Cs was confirmed by inductively coupled plasma atomic emission spectrometry and mass spectrometry analysis of the samples. The scanning electron microscopy/energy dispersive X-ray and X-ray diffraction analyses of simulants 1 and 2 electrolyzed at 0.9 V vs. Ca²⁺/Ca confirmed that most of SiO₂ had been reduced to Si. After the electrolysis of simulants 1 and 2, Al, Zr, and Pd remained in the solid phase. In addition, SeO₂ was found to remain partially in the solid phase and partially evaporate, although a small quantity dissolved into the molten salt.

两种类型的玻璃化放射性废物简化模拟物的电化学还原，模拟物1（仅玻璃成分：SiO ₂，B ₂ O ₃，Na ₂ O，Al ₂ O ₃，CaO，Li ₂ O和ZnO）和模拟物2 （还包含长寿命的裂变产物氧化物ZrO ₂，Cs ₂ O，PdO和SeO ₂）在1103 K的熔融CaCl ₂中进行了研究。每种元素的行为均通过电势-p O ^2-图预测根据热力学数据构建。将模拟物1浸入熔融的CaCl _2中之后在不进行电解的情况下，通过电感耦合等离子体原子发射光谱法和样品的质谱分析法确认了Na，Li和Cs的溶解。对在0.9 V vs. Ca ²⁺ / Ca下电解的模拟物1和2的扫描电子显微镜/能量色散X射线和X射线衍射分析证实，大多数SiO ₂已被还原为Si。在模拟物1和2电解后，Al，Zr和Pd保留在固相中。另外，发现SeO ₂尽管少量溶解在熔融盐中，但部分保留在固相中并部分蒸发。