ThF<sub>4</sub>-LiCl-KCl熔盐体系中F<sup>-</sup>浓度对Th(IV)电解提取的影响

徐千惠; 朱铁建; 郑海洋; 蒋锋; 佘长锋; 黄卫; 李晴暖

doi:10.11889/j.1000-3436.2018.rrj.36.030301

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ThF₄-LiCl-KCl熔盐体系中F^-浓度对Th(IV)电解提取的影响

辐射化学 | 更新时间：2021-12-10

- ThF₄-LiCl-KCl熔盐体系中F^-浓度对Th(IV)电解提取的影响
- Effect of F^- concentration on the electrolysis of Th (IV) in ThF₄-LiCl-KCl molten salt
- 辐射研究与辐射工艺学报 2018年36卷第3期
- 作者机构：
  
  1.中国科学院上海应用物理研究所上海 201800
  2.中国科学院大学北京 100049
  3.中国科学院先进核能创新研究院上海 201800
- 作者简介：
  
  [ "徐千惠, 女, 1993年2月出生, 2015年6月于武汉理工大学获得学士学位, 现为中国科学院上海应用物理研究所无机化学专业硕士研究生, E-mail:xuqianhui@sinap.ac.cn", "XU Qianhui (female) was born in February 1993, and received her bachelor's degree from Wuhan University of Technology in June 2015. Now she is a master candidate at Shanghai Institute of Applied Physics, Chinese Academy of Sciences, majoring in inorganic chemistry. E-mail: xuqianhui@sinap.ac.cn" ]
  李晴暖, 女, 博士, 研究员, E-mail:liqingnuan@sinap.ac.cn Ph.D. LI Qingnuan, professor, E-mail: liqingnuan@sinap.ac.cn
- 基金信息：
  
  中国科学院战略科技先导专项(XDA02030000);国家自然科学基金项目(21601200);中国科学院前沿科学重点研究项目(QYZDY-SSW-JSC016);中国科学院青年创新促进会项目(2017307)
- DOI：10.11889/j.1000-3436.2018.rrj.36.030301
  中图分类号：
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徐千惠, 朱铁建, 郑海洋, 等. ThF₄-LiCl-KCl熔盐体系中F^-浓度对Th(IV)电解提取的影响[J]. 辐射研究与辐射工艺学报, 2018,36(3):030301-8.

Qianhui XU, Tiejian ZHU, Haiyang ZHENG, et al. Effect of F^- concentration on the electrolysis of Th (IV) in ThF₄-LiCl-KCl molten salt[J]. Journal of Radiation Research and Radiation Processing, 2018,36(3):030301-8.
徐千惠, 朱铁建, 郑海洋, 等. ThF₄-LiCl-KCl熔盐体系中F^-浓度对Th(IV)电解提取的影响[J]. 辐射研究与辐射工艺学报, 2018,36(3):030301-8. DOI： 10.11889/j.1000-3436.2018.rrj.36.030301.

Qianhui XU, Tiejian ZHU, Haiyang ZHENG, et al. Effect of F^- concentration on the electrolysis of Th (IV) in ThF₄-LiCl-KCl molten salt[J]. Journal of Radiation Research and Radiation Processing, 2018,36(3):030301-8. DOI： 10.11889/j.1000-3436.2018.rrj.36.030301.

摘要

通过添加LiF和KF调节ThF,4,-LiCl-KCl熔盐体系中的[F,-,]/[Th（IV）],比值，并以[F,-,]/[Th（IV）],比值代表熔盐中F,-,浓度大小，研究了F,-,浓度对Th（IV）电解提取率的影响。研究结果表明，在[F,-,]/[Th（IV）],比值为4～12时，Th的提取率呈下降趋势，熔盐中F,-,浓度的增加对Th在电极上的析出产生消极影响。用计时电势法研究了不同[F,-,]/[Th（IV）],比值熔盐体系中Th（IV）的扩散系数，发现[F,-,]/[Th（IV）],比值在4～12时，Th（IV）的扩散系数呈现先减小后增加的趋势，在[F,-,]/[Th（IV）],比值为8时出现一个拐点；但由于F,-,浓度的增加显著降低了Th（IV）电解过程的电流密度，最终导致相同电解时间内Th的提取率呈下降趋势。

Abstract

The ratio of[F,-,]/[Th(IV)], in the ThF,4,-LiCl-KCl molten salt system was adjusted by adding LiF and KF. The ratio of[F,-,]/[Th(IV)], reflected the concentration of F,-, in the molten salt. The effect of F,-, concentration on the electrolysis recycling rate of Th(IV) was examined. The recycling rate of Th(IV) decreased with increasing ratios of[F,-,]/[Th(IV)], from 4 to 12, indicating that increased F,-, concentration in the molten salt affected the precipitation of Th(IV) on the electrode. Chronopotentiometry was used to determine the diffusion coefficient of Th(IV) in the LiCl-KCl molten salt with different[F,-,]/[Th(IV)], ratios. The diffusion coefficient of Th(IV) initially decreased and subsequently increased, and a turning point was observed at a[F,-,]/[Th(IV)], ratio of 8. However, due to the increased F,-,concentration, the current density in the electrolysis process of Th(IV) was significantly reduced, resulting in a decreased recycling rate of Th(IV).

关键词

ThF4LiCl-KCl电化学提取[F-]/[Th (IV)]物质的量比

Keywords

ThF4LiCl-KClElectrochemical recycling[F-]/[Th (IV)]molar ratio

references

H Xu , Z Dai , X Cai . Some physical issues of the thorium molten salt reactor nuclear energy system . Nuclear Physics News , 2014 . 24 (2 ):24 -30 . DOI:10.1080/10619127.2014.910434http://doi.org/10.1080/10619127.2014.910434.

A Radkowsky . Using thorium in a commercial nuclear fuel cycle:how to do it . Nuclear Engineering International , 1999 . 44 (534 ):14 -16. .

Li Q. Current progress in R&D on pyroprocess technology for TMSR in SINAP[C]. 2014 IPRC, Idaho, USA. 2014: 19-23

王先彬 , 龙德武 , 朱铁建 , 等 . Ln3+在LnF3-LiCl-KCl熔盐体系中的电化学行为 . 核技术 , 2018 . 41 (6 ):060301 DOI:10.11889/j.0253-3219.2018.hjs.41.060301http://doi.org/10.11889/j.0253-3219.2018.hjs.41.060301 .

Xianbin WANG , Dewu LONG , Tiejian ZHU , 等 . Electrochemical behavior of Ln3+ in LnF3-LiCl-KCl molten salt . Nuclear Techniques , 2018 . 41 (6 ):060301 DOI:10.11889/j.0253-3219.2018.hjs.41.060301http://doi.org/10.11889/j.0253-3219.2018.hjs.41.060301 .

X Wang , W Huang , Y Gong , 等 . Electrochemical behavior of Th(IV) and its electrodeposition from ThF4-LiCl-KCl melt . Electrochimica Acta , 2016 . 196 286 -293 . DOI:10.1016/j.electacta.2016.02.184http://doi.org/10.1016/j.electacta.2016.02.184 .

J J Roy , L F Grantham , D L Grimmett , 等 . Thermodynamic properties of U, Np, Pu, and Am in molten LiCl-KCl eutectic and liquid cadmium . Journal of the Electrochemical Society , 1996 . 143 (8 ):2487 -2492 . DOI:10.1149/1.1837035http://doi.org/10.1149/1.1837035 .

M R Bermejo , J Gómez , J Medina , 等 . The electrochemistry of gadolinium in the eutectic LiCl-KCl on W and Al electrodes . Journal of Electroanalytical Chemistry , 2006 . 588 (2 ):253 -266 . DOI:10.1016/j.jelechem.2005.12.031http://doi.org/10.1016/j.jelechem.2005.12.031 .

P Masset , R J M Konings , R Malmbeck , 等 . Thermochemical properties of lanthanides (Ln=La, Nd) and actinides (An=U, Np, Pu, Am) in the molten LiCl-KCl eutectic . Journal of Nuclear Materials , 2005 . 344 (1-3 ):173 -179 . DOI:10.1016/j.jnucmat.2005.04.038http://doi.org/10.1016/j.jnucmat.2005.04.038 .

B P Reddy , S Vandarkuzhali , T Subramanian , 等 . Electrochemical studies on the redox mechanism of uranium chloride in molten LiCl-KCl eutectic . Electrochimica Acta , 2004 . 49 (15 ):2471 -2478 . DOI:10.1016/j.electacta.2004.02.002http://doi.org/10.1016/j.electacta.2004.02.002 .

K Liu , L Y Yuan , Y L Liu , 等 . Electrochemical reactions of the Th4+/Th couple on the tungsten, aluminum and bismuth electrodes in chloride molten salt . Electrochimica Acta , 2014 . 130 (4 ):650 -659 . DOI:10.1016/j.electacta.2014.03.085http://doi.org/10.1016/j.electacta.2014.03.085 .

P J Tumidajski , S N Flengas . Potential measurements of thorium tetrachloride in alkali halide solut . Canadian Journal of Chemistry , 1991 . 69 (3 ):462 -467 . DOI:10.1139/v91-069http://doi.org/10.1139/v91-069 .

S Delpech , S Jaskierowicz , D Rodrigues . Electrochemistry of thorium fluoride in LiCl-KCl eutectic melts and methodology for speciation studies with fluorides ions . Electrochimica Acta , 2014 . 144 383 -390 . DOI:10.1016/j.electacta.2014.07.096http://doi.org/10.1016/j.electacta.2014.07.096 .

程英芳 . 制备核纯四氟化钍 . 原子能科学技术 , 1986 . 20 (3 ):348 -348 . http://www.cqvip.com/QK/95680X/201403/50145368.htmlhttp://www.cqvip.com/QK/95680X/201403/50145368.html, .

Yingfang CHENG . Preparation of nuclear pure tetrafluoride . Atomic Energy Science and Technology , 1986 . 20 (3 ):348 -348 . http://www.cqvip.com/QK/95680X/201403/50145368.htmlhttp://www.cqvip.com/QK/95680X/201403/50145368.html, .

朱铁建, 郑海洋, 张国欣, 等. 一种银/氯化银参比电极及其制作方法: CN104297311A[P]. 2015-01-21.

ZHU Tiejian, ZHENG Haiyang, ZHANG Guoxin, et al. Silver/silver chloride reference electrode and its production method: CN104297311A[P]. 2015-01-21.

Long D, Huang W, Jiang F. Study on the electrochemical extraction of rare earth elements from FLINAK[R]. International nuclear fuel cycle conference. Global 2013: nuclear energy at a crossroads. Salt Lake City, Utah. 2013.

W Huang , L F Tian , C F She , 等 . Electrochemical behavior of europium(Ⅲ)-europium(Ⅱ) in LiF-NaF-KF molten salt . Electrochimica Acta , 2014 . 147 114 -120 . DOI:10.1016/j.electacta.2014.08.119http://doi.org/10.1016/j.electacta.2014.08.119 .

B Y Kim , H L Dong , J Y Lee , 等 . Electrochemical and spectroscopic investigations of Tb(Ⅲ) in molten LiCl-KCl eutectic at high temperature . Electrochemistry Communications , 2010 . 12 (8 ):1005 -1008 . DOI:10.1016/j.elecom.2010.05.009http://doi.org/10.1016/j.elecom.2010.05.009 .

G Pakhui , M Chandra , S Ghosh , 等 . Electrochemical studies on the reduction behaviour of Th4+, in molten LiCl-KCl eutectic . Electrochimica Acta , 2015 . 155 372 -382 . DOI:10.1016/j.electacta.2014.12.144http://doi.org/10.1016/j.electacta.2014.12.144 .

M Ueda , H Kigawa , T Ohtsuka . Co-deposition of Al-Cr-Ni alloys using constant potential and potential pulse techniques in AlCl3-NaCl-KCl molten salt . Electrochimica Acta , 2007 . 52 (7 ):2515 -2519 . DOI:10.1016/j.electacta.2006.09.001http://doi.org/10.1016/j.electacta.2006.09.001 .

T Berzins , P Delahay . Oscillographic polarographic waves for the reversible deposition of metals on solid electrodes . Journal of the American Chemical Society , 2002 . 75 (3 ):555 -559 . DOI:10.1021/ja01099a013http://doi.org/10.1021/ja01099a013 .

L Cassayre , J Serp , P Soucek , 等 . Electrochemistry of thorium in LiCl-KCl eutectic melts . Electrochimica Acta , 2007 . 52 (26 ):7432 -7437 . DOI:10.1016/j.electacta.2007.06.022http://doi.org/10.1016/j.electacta.2007.06.022 .

A J Bard , L R Faulkner . Electrochemical methods:fundamentals and applications , :2nd ed. City of New York John Wiley & Sons, Inc , 1980 .

G M Photiadis , G N Papatheodorou . Co-ordination of thorium(IV) in molten alkali-metal chlorides and the structure of liquid and glassy thorium(IV) chloride . Journal of the Chemical Society Dalton Transactions , 1999 . 18 (20 ):3541 -3548 . DOI:10.1039/a905065ehttp://doi.org/10.1039/a905065e .

L F Tian , W Huang , F Jiang , 等 . Electrochemical behavior of graphite anode in LiF-NaF-KF eutectic with YF3 . Electrochimica Acta , 2016 . 225 392 -398 . DOI:10.1016/j.electacta.2016.12.165http://doi.org/10.1016/j.electacta.2016.12.165 .

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ThF4-LiCl-KCl熔盐体系中F-浓度对Th(IV)电解提取的影响

Effect of F- concentration on the electrolysis of Th (IV) in ThF4-LiCl-KCl molten salt

DOI：10.11889/j.1000-3436.2018.rrj.36.030301

摘要

Abstract

关键词

Keywords

references

ThF₄-LiCl-KCl熔盐体系中F^-浓度对Th(IV)电解提取的影响

Effect of F^- concentration on the electrolysis of Th (IV) in ThF₄-LiCl-KCl molten salt