Study on the Thermal Stability of the Na2UF8 Complex in the Argon Atmosphere
文献类型：期刊论文
| 作者 | Cui, RR; Cheng, ZQ; Dai, JX; Dou, Q; Li, QN |
| 刊名 | ACS OMEGA
 |
| 出版日期 | 2020 |
| 卷号 | 5期号:11页码:5651-5656 |
| 关键词 | SPECTRA |
| ISSN号 | 2470-1343 |
| DOI | 10.1021/acsomega.9b03269 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The Na2UF8 complex is an important intermediate compound in the purification of UF(6 )by the adsorption-desorption process during fluoride volatility of the spent nuclear fuel, and its decomposition is seriously affected by temperature and atmosphere. In this study, the thermal stability of Na2UF8 in the argon atmosphere was investigated by the in situ Raman spectroscopy. The decomposition products of Na2UF8 at different temperatures were systematically determined by X-ray diffraction spectroscopy and X-ray absorption fine structure spectroscopy. The results indicated that Na2UF8 on the NaF sorbent was stable under 300 degrees C in the argon atmosphere, and it started to decompose into UF6 and NaF rapidly when the temperature was above 300 degrees C. Meanwhile, a small amount of Na2UF8 was converted to Na2UF7, and it was stable in the temperature range from 350 to 450 degrees C. The decomposition mechanism of the Na2UF8 and the formation mechanism of Na2UF7 on the NaF sorbent were speculated according to the experimental results. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/33169]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys SINAP, Div Radiochem & Engn, Shanghai 201800, Peoples R China 3.Chinese Acad Sci, Ctr Excellence TMSR Energy Syst, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, RR,Cheng, ZQ,Dai, JX,et al. Study on the Thermal Stability of the Na2UF8 Complex in the Argon Atmosphere[J]. ACS OMEGA,2020,5(11):5651-5656. |
| APA | Cui, RR,Cheng, ZQ,Dai, JX,Dou, Q,&Li, QN.(2020).Study on the Thermal Stability of the Na2UF8 Complex in the Argon Atmosphere.ACS OMEGA,5(11),5651-5656. |
| MLA | Cui, RR,et al."Study on the Thermal Stability of the Na2UF8 Complex in the Argon Atmosphere".ACS OMEGA 5.11(2020):5651-5656. |
入库方式： OAI收割
来源：上海应用物理研究所
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