| ThF4浓度对CeF3-ThF4-LiCl-KCl熔盐中Th电解沉积的影响 |
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| 引用本文： | 王先彬,蒋锋,朱铁建,郑海洋,佘长锋,黄卫,李晴暖. ThF4浓度对CeF3-ThF4-LiCl-KCl熔盐中Th电解沉积的影响[J]. 核化学与放射化学, 2021, 43(1): 57-63. DOI: 10.7538/hhx.2020.YX.2019051 |
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| 作者姓名： | 王先彬 蒋锋 朱铁建 郑海洋 佘长锋 黄卫 李晴暖 |
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| 作者单位： | 中国科学院上海应用物理研究所,上海201800;中国科学院大学,北京100049;中国科学院上海应用物理研究所,上海201800 |
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| 基金项目： | 中国科学院战略科技先导专项(XDA02030000);国家自然科学基金资助项目(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资助项目(2017307)。 |
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| 摘 要： | 研究了高ThF4浓度下的CeF3-ThF4-LiCl-KCl熔盐中Th的电化学沉积行为.ThF4的质量分数从3％增加为10％时,Th(Ⅳ)的初始还原电位略微正移(从-1.75 V正移至-1.72 V,vs.Ag/AgCl).熔盐中Th(Ⅳ)浓度的增大会导致其初始还原电位正移,而F浓度的增大则导致其负移.电解沉积时,10...
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| 关 键 词： | ThF4 LiCl-KCl 电解沉积 浓度 |
Effect of ThF4 Concentration on Th Electrodeposition in CeF3-ThF4-LiCl-KCl Molten Salt |
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| WANG Xian-bin,JIANG Feng,ZHU Tie-jian,ZHENG Hai-yang,SHE Chang-feng,HUANG Wei,LI Qing-nuan. Effect of ThF4 Concentration on Th Electrodeposition in CeF3-ThF4-LiCl-KCl Molten Salt[J]. Journal of Nuclear and Radiochemistry, 2021, 43(1): 57-63. DOI: 10.7538/hhx.2020.YX.2019051 |
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| Authors: | WANG Xian-bin JIANG Feng ZHU Tie-jian ZHENG Hai-yang SHE Chang-feng HUANG Wei LI Qing-nuan |
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| Affiliation: | Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China；University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this paper,the electrochemical deposition of Th in CeF3-ThF4-LiCl-KCl molten salt with high ThF4 concentration was studied.When the concentration of ThF4 increases from 3%(w)to 10%,the initial reduction potential of Th(Ⅳ)has a slight positive shift from-1.75 V to-1.72 V(vs.Ag/AgCl).The increase of Th(Ⅳ)concentration can lead to a positive shift of the initial reduction potential,while the increase of F-concentration will lead to a negative shift.The initial electrolytic rate and cathodic deposition amount of 10%ThF4 system are significantly higher than those of 3%ThF4 system,indicating that the concentration of Th(Ⅳ)is an important factor of the electrolytic extraction of thorium;meanwhile,under the same Th(Ⅳ)concentration,the higher the F-concentration is,the lower the electrolytic rate will be.The electrolysis results show that the separation rate of Th in 0.3%CeF3-10%ThF4-LiCl-KCl molten salt can reach 99.7%,and Ce has almost no electrolytic extraction. |
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| Keywords: | ThF 4 LiCl-KCl electrodeposition concentration |
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