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- Title
Selective extraction of gadolinium from SmO and GdO mixtures in a single step assisted by MgCl in LiCl-KCl melts.
- Authors
Yang, Yusheng; Zhang, Milin; Han, Wei; Jiang, Hailing; Li, Mei; Ye, Ke; Yan, Yongde
- Abstract
The chloration of MgCl was studied in the LiCl-KCl-MgCl-GdO-SmO melts. Gd(III) and Sm(III) ions were observed by cyclic voltammetry and square wave voltammetry assisted by MgCl in melts. X-ray diffraction (XRD) patterns of melts indicated GdO and SmO were chlorinated by MgCl and formed GdCl and SmCl. XRD patterns of non-dissolved residues, which were left after the melts were washed with water to remove the soluble salt, showed that the new compounds (i.e., GdOCl, SmOCl, MgO, Gd(OH), and Sm(OH)) were produced. Potentiostatic electrolysis experiments were performed to extract Gd from GdO and SmO mixtures assisted by MgCl. Separation between GdO and SmO was also achieved in a single step with the formation of Mg-Li-Gd alloys. XRD patterns of alloys indicated that MgGd phase was formed. Scanning electron microscope images with energy dispersive X-ray spectroscopy showed Gd elements were mainly distributed in the grain boundary.
- Subjects
GADOLINIUM isotopes; EXTRACTION (Chemistry); SCANNING electron microscopy; VOLTAMMETRY; X-ray diffraction; MAGNESIUM chloride
- Publication
Journal of Solid State Electrochemistry, 2014, Vol 18, Issue 3, p843
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-013-2333-7