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- Title
Preparation and adsorption performance of a NiO/MgF<sub>2</sub> composite adsorbent.
- Authors
Li, Sasa; Cheng, ZhiQiang; Zhang, Linjuan; Han, Han; Dai, Jianxing; Li, Yangjuan; Dou, Qiang; Li, Qingnuan
- Abstract
Fluoride adsorbents have been applied for the purification of UF6 product from fluorination process. A MgF2-based adsorbent, NiO/MgF2, was prepared using NiF2 as doping agent. The specific surface area of NiO/MgF2 was 5 times larger than that of MgF2, its porosity was also larger than that of MgF2. The saturated adsorption capacity of NiO/MgF2 for MoF6 was 21.4 ± 1.9 mg g−1. The desorption behavior was examined by thermogravimetric analysis (TG). The NiO/MgF2 with adsorbed MoF6 was investigated using extended X-ray absorption fine structure spectroscopy (EXAFS), which showed no bonding interactions between NiO and MoF6, while the adsorption of MoF6 on NiO/MgF2 was chemisorption via a Mo-F-Mg bond.
- Subjects
ADSORPTION (Chemistry); NICKEL oxide; FLUORINATION; FLUORIDES; MAGNESIUM fluoride
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2018, Vol 317, Issue 1, p287
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-018-5897-y