Study on the Thermal Stability of the Na2UF8 Complex in the Argon Atmosphere

doi:10.1021/acsomega.9b03269

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Study on the Thermal Stability of the Na2UF8 Complex in the Argon Atmosphere
	Cui, RR ; Cheng, ZQ ; Dai, JX ; Dou, Q ; Li, QN
刊名	ACS OMEGA
	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
内容类型	期刊论文
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.