铕的化合物作为激光、发光、磁光以及磁性半导体等材料,对发展近代技术有重要意义,因而制备三价铕和二价铕的纯化合物是很需要的。自稀土元素中制取铕,一般均利用其变价性质,借亚铕离子和三价稀土离子化学性质上的显著差别而分离。以往文献报道过电解法,汞阴极电解法、锌粉、 Europium compounds as materials for lasers, light-emitting, magneto-optical and magnetic semiconductors are of great importance for the development of modern technologies and therefore it is highly desirable to prepare pure compounds of trivalent europium and divalent europium. Preparation of europium from rare earth elements, are generally based on the use of its variable-price nature of the Eu ion and trivalent rare earth ion chemical properties of the significant differences between the separation. In the past literature reported electrolysis, mercury cathodic electrolysis, zinc,