在AlCl3的辅助下从LiCl-KCl-AlCl3-Nd2O3熔盐中电解提取Nd*
收稿日期: 2015-11-11
网络出版日期: 2016-03-21
基金资助
* 国家自然科学基金项目91226201, 91326113和51574097, 黑龙江省科学基金LC2016018, 黑龙江博士后科研启动及特别资助科学基金项目LBH-Q15019, LBH-Q15020和LBH-TZ0411, 以及黑龙江省普通高等学校和哈尔滨工程大学青年学术骨干支持计划项目1253G016和HEUCFQ1415资助
ELECTROLYSIS EXTRACTION OF NEODYMIUM FROM LiCl-KCl-AlCl3-Nd2O3 MELTS WITHTHE ASSISTANCE OF AlCl3
Received date: 2015-11-11
Online published: 2016-03-21
Supported by
Supported by National Natural Science Foundation of China (Nos.91226201, 91326113 and 51574097), Science Foundation of Heilongjiang Province (No.LC2016018), Scientific Research and Special Foundation of Heilongjiang Postdoctoral Science Foundation (Nos.LBH-Q15019, LBH-Q15020 and LBH-TZ0411) and Foundation for University Key Teacher of Heilongjiang Province and Harbin Engineering University (Nos.1253G016 and HEUCFQ1415)
研究了753 K时Nd在W和Al电极上LiCl-KCl-AlCl3-Nd2O3体系中的电化学行为, 同时研究了AlCl3对Nd2O3的氯化作用, 并直接以Nd2O3为原料, 在W和Al电极上电解提取Nd, 获得Al-Nd合金. 在W电极上, LiCl-KCl-Nd2O3体系中的循环伏安曲线中并未观察到Nd还原的信号. 加入AlCl3后, 观察到Nd在预先沉积Al基体上欠电位沉积形成3种Al-Nd金属间化合物的电化学信号. 在Al电极上LiCl-KCl-AlCl3-Nd2O3体系中观察到2种Al-Nd金属间化合物的形成信号. 测量结果表明, AlCl3能有效地氯化Nd2O3. 在-2 A下, W电极上恒电流电解提取Nd, 获得了Al-Nd合金, XRD分析结果表明, 形成的合金含Al2Nd相. 而在活性Al阴极上电解提取Nd, 获得的Al-Nd合金含Al3Nd相.
关键词： LiCl-KCl熔盐; 电解提取; 镧系元素; Al-Nd合金
薛云 , 杨雪 , 颜永得 , 张密林 , 纪德彬 , 李恩雨 , 韩伟 . 在AlCl3的辅助下从LiCl-KCl-AlCl3-Nd2O3熔盐中电解提取Nd*[J]. 金属学报, 2016 , 52(7) : 883 -889 . DOI: 10.11900/0412.1961.2015.00576
Based on the understanding of oxide spent fuel reprocessing, the AlCl3 was selected as chlorinating agent to directly chloridize spent fuel. At the same time, Nd could be extracted by co-deposition with the intro duction of Al3+. This process could be realized by the purpose of electrochemical extraction. The electrochemical behavior of Nd(III) ions was investigated in LiCl-KCl-AlCl3-Nd2O3 melt on W and Al electrodes at 753 K. Simultaneously, the chlorination effects of Nd2O3 by AlCl3 was also studied. Using Nd2O3 as raw material, Al-Nd alloy was obtained via electrolytic extraction Nd on W and Al electrodes. On the W electrode, no reduction signal of Nd(III) was detected in the cyclic voltammogram of LiCl-KCl-Nd2O3 melt. After the addition of AlCl3, three electrochemical signals for three Al-Nd intermetallic compounds from the underpotential deposition of Nd on pre-deposited Al substrate were observed. On the Al electrode, two formation signals of Al-Nd intermetallic compounds were observed in the LiCl-KCl-AlCl3-Nd2O3 melt. The results show that AlCl3 can effectively chloridize Nd2O3. Nd was extracted by galvanostatia electrolysis on the W electrodes under -2 A, and Al-Nd alloy was obtained. The XRD results suggest that Al2Nd phase is formed. However, when the electrolytic extraction of Nd was carried out on active Al electrode, Al3Nd phase was formed in Al-Nd alloy.
Key words： LiCl-KCl melt; electrolytic extraction; lanthanide element; Al-Nd alloy
| [1] | Gu Z M.J Nucl Radiochem, 2006; 28: 1 |
| [1] | (顾忠茂. 核化学与放射化学, 2006; 28: 1) |
| [2] | Zhou P D.Nucl Sci Eng, 2002; 22: 261 |
| [2] | (周培德. 核科学与工程, 2002; 22: 261) |
| [3] | Smolenski V, Novoselova A, Bovet A, Osipenko A, Kormilitsyn M.J Nucl Mater, 2009; 385: 184 |
| [4] | Castrillejo Y, Bermejo M R, Barrado E, Barrado E, Martinez A M.Electrochim Acta, 2006; 51: 1941 |
| [5] | Castrillejo Y, Bermejo M R, Barrado A I, Rardo R, Barrado E, Martinez A M.Electrochim Acta, 2005; 50: 2047 |
| [6] | Bermejo M R, Gómez J, Medina J, Martinez A M, Castrillejo Y.J Electroanal Chem, 2006; 588: 253 |
| [7] | Du S L, Su M Z.Acta Metall Sin, 1991; 27: 111 |
| [7] | (杜森林, 苏明忠. 金属学报, 1991; 27: 111) |
| [8] | Nourry C, Massot L, Chamelot P, Taxil P.J Appl Electrochem, 2009; 39: 2359 |
| [9] | Taxil P, Massot L, Nourry C, Gibilaro M, Chamelot P, Cassayre L.J Fluorine Chem, 2009; 130: 94 |
| [10] | Xue Y, Zhou Z P, Yan Y D, Zhang M L, Li X, Ji D B, Han W, Zhang M.Acta Phys Chim Sin, 2014; 30: 1674 |
| [10] | (薛云, 周志萍, 颜永得, 张密林, 李星, 纪德彬, 韩伟, 张萌. 物理化学学报, 2014; 30: 1674) |
| [11] | Xue Y, Zhou Z P, Yan Y D, Zhang M L, Li X, Ji D B, Tang H, Zhang Z J.RSC Adv, 2015; 5: 23114 |
| [12] | Li X, Yan Y D, Zhang M L, Xue Y, Tang H, Zhou Z P, Yang X N, Zhang Z J.J Electrochem Soc, 2014; 161: D248 |
| [13] | Zhang M L, Yang Y S, Han W, Li M, Ye K, Sun Y, Yan Y D.J Solid State Chem, 2013; 17: 2671 |
| [14] | Tang H, Yan Y D, Zhang M L, Li X, Han W, Xue Y, Zhang Z J, He H.Electrochim Acta, 2013; 107: 209 |
| [15] | Papatheodorou G N, Kucera G H.Inorg Chem, 1979; 18: 385 |
| [16] | Xue Y, Wang Q, Yan Y D, Chen L, Zhang M L, Zhang Z J.Energy Procedia, 2013; 39: 474 |
| [17] | Yan Y D, Tang H, Zhang M L, Xue Y, Han W, Cao D X, Zhang Z Z.Electrochim Acta, 2012; 59: 531 |
| [18] | Wang L, Liu Y L, Liu K, Tang S L, Yuan L Y, Su L L, Chai Z F, Shi W Q.Electrochim Acta, 2014; 147: 385 |
| [19] | Fukasawa K, Uehara A, Nagai T, Fujii T, Yamana H.J Nucl Mater, 2011; 414: 265 |
| [20] | De Cordoba G, Laplace A, Conocar O, Lacquement J, Caravaca C.Electrochim Acta, 2008; 54: 280 |
| [21] | Tang H, Pesic B.J Nucl Mater, 2015; 458: 37 |
| [22] | Yan Y D, Xu Y L, Zhang M L, Xue Y, Han W, Hang Y, Chen Q, Zhang Z J.J Nucl Mater, 2013; 433: 152 |
| [23] | Li X, Yan Y D, Zhang M L, Xue Y, Tang H, Zhou Z P, Yang X N, Zhang Z J.J Radioanal Nucl Chem, 2014; 299: 657 |
| [24] | Yan Y D, Yang X N, Zhang M L, Li X, Wang L, Xue Y, Zhang Z J.Acta Metall Sin, 2014; 50: 989 |
| [24] | (颜永得, 杨晓南, 张密林, 李星, 王丽, 薛云, 张志俭. 金属学报, 2014; 50: 989) |
| [25] | Massalski T B, Murray J L, Benett L H, Baker H.Binary Alloy Phase Diagrams. Vol.1, Metals Park, Ohio: The Materials Information Company, 1986: 293 |
/
| 〈 |
|
〉 |
