Chemical and electrochemical studies on the solubility of UO2 in molten FLINAK with ZrF4 additive

doi:10.1016/j.jnucmat.2018.08.013

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

	Chemical and electrochemical studies on the solubility of UO2 in molten FLINAK with ZrF4 additive
	Peng, H; Shen, M; Zuo, Y; Fu, HY; Xie, LD
刊名	JOURNAL OF NUCLEAR MATERIALS
	2018
卷号	510 期号:-页码:256-264
关键词	SQUARE-WAVE VOLTAMMETRY LIF-NAF-KF REFERENCE ELECTRODE HIGH-TEMPERATURE FLUORIDE SALTS OXIDE IONS URANIUM LIF-BEF2-ZRF4 REDUCTION REACTOR
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2018.08.013
文献子类	期刊论文
英文摘要	The solubility of UO2 in molten FLINAK with ZrF(4 )additive was studied by using chemical and electro-chemical methods. The chemical results showed that the solubility of UO2 was lower by 0.247 wt% in molten FLINAK. When more than 2.91 wt% of ZrF4 was added into the FLINAK-UO2 melts, the maximum solubility of UO2 at 1.422 wt% can be achieved. Moreover, compared with the FLINAK-UO2 melts, a new cathodic peak at approximately 0.21 V (vs. alkalis(+)/alkalis) was detected in FLINAK-ZrF4-UO2 melts by using cyclic voltammetry (CV) and square wave voltammetry (SWV). This cathodic peak was attributed to the higher electroactive species ZrOF2 confirmed by CV and potentiostatic electrolysis. Thus, it can be concluded that the dissolution of UO2 is caused by the reaction of UO2 + ZrF4 = UOF2 + ZrOF2. The SWVs of FLINAK-ZrF4-UO2 system further showed that the concentration of ZrOF2 species in the bath gradually increased with the addition of ZrF4, which further proves that the dissolution of UO2 is facilitated by ZrF4 additive. (C) 2018 Elsevier B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/30873]
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	Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Peng, H,Shen, M,Zuo, Y,et al. Chemical and electrochemical studies on the solubility of UO2 in molten FLINAK with ZrF4 additive[J]. JOURNAL OF NUCLEAR MATERIALS,2018,510(-):256-264.
APA	Peng, H,Shen, M,Zuo, Y,Fu, HY,&Xie, LD.(2018).Chemical and electrochemical studies on the solubility of UO2 in molten FLINAK with ZrF4 additive.JOURNAL OF NUCLEAR MATERIALS,510(-),256-264.
MLA	Peng, H,et al."Chemical and electrochemical studies on the solubility of UO2 in molten FLINAK with ZrF4 additive".JOURNAL OF NUCLEAR MATERIALS 510.-(2018):256-264.