The electrochemical behavior of Pr(III) and formation process of Pr-Al intermetallics were investigated by different elec-trochemical methods. The reduction of Pr(III) ion to metallic Pr is an one-step three-electrons reaction. The reversibility of Pr(III)/Pr(0) system was evaluated by cyclic voltammograms with different scan rates. The co-reduction of Pr(III) and Al(III) ions formed three different Pr-Al intermetallics at electrode potentials around?1.40,?1.80, and?1.95 V vs. Ag/AgCl at 723 K, respec-tively. Open-circuit chronopotentiometry and electromotive force (emf) measurements were carried out to estimate the relative molar Gibbs energies of Pr for the formation of different Pr-Al intermetallics in the temperature range of 723–843 K. The activities of Pr in the Pr-Al intermetallic compounds were calculated.
参考文献
| [1] | Wang, C.S.;Liu, Y.;He, H.;Gao, F.X.;Liu, L.S.;Chang, S.W.;Guo, J.H.;Chang, L.;Li, R.X.;Ouyang, Y.G..Electrochemical separation of uranium and cerium in molten LiCl-KCl[J].Journal of Radioanalytical and Nuclear Chemistry: An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry,20131(1):581-586. |
| [2] | Hudry D;Bardez I;Rakhmatullin A;Bessada C;Bart F;Jobic S;Deniard P.Synthesis of rare earth phosphates in molten LiCl-KCl eutectic: Application to preliminary treatment of chlorinated waste streams containing fission products[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,20083(3):284-289. |
| [3] | Gibilaro M;Massot L;Chamelot P;Taxil P.Study of neodymium extraction in molten fluorides by electrochemical co-reduction with aluminium[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,20081(1):39-45. |
| [4] | M. Gibilaro;L. Massot;P. Chamelot;L. Cassayre;P. Taxil.Electrochemical extraction of europium from molten fluoride media[J].Electrochimica Acta,20091(1):281-287. |
| [5] | M. Gibilaro;L. Massot;P. Chamelot;P. Taxil.Co-reduction of aluminium and lanthanide ions in molten fluorides: Application to cerium and samarium extraction from nuclear wastes[J].Electrochimica Acta,200922(22):5300-5306. |
| [6] | Castrillejo, Y.;Fernández, P.;Medina, J.;Vega, M.;Barrado, E..Chemical and electrochemical extraction of ytterbium from molten chlorides in pyrochemical processes[J].Electroanalysis,20111(1):222-236. |
| [7] | Y. Castrillejo;P. Fernandez;J. Medina;P. Hernandez;E. Barrado.Electrochemical extraction of samarium from molten chlorides in pyrochemical processes[J].Electrochimica Acta,201124(24):8638-8644. |
| [8] | Hao Tang;Yong-De Yan;Mi-Lin Zhang;Xing Li;Ying Huang;Yan-Lu Xu;Yun Xue;Wei Han;Zhi-Jian Zhang.AlCl_3-aided extraction of praseodymium from Pr_6O_(11) in LiCl-KCl eutectic melts[J].Electrochimica Acta,2013:457-462. |
| [9] | Yong De Yan;Hao Tang;Mi Lin Zhang;Yun Xue;Wei Han;Dian Xue Cao;Zhi Jian Zhang.Extraction of europium and electrodeposition of Al-Li-Eu alloy from Eu_2O_3 assisted by AlCl_3 in LiCl-KCl melt[J].Electrochimica Acta,2012:531-537. |
| [10] | Liu, Ya-Lan;Yuan, Li-Yong;Ye, Guo-An;Kui-Liu;Zhu, Lin;Zhang, Mi-Lin;Chai, Zhi-Fang;Shi, Wei-Qun.Co-reduction behaviors of lanthanum and aluminium ions in LiCI-KCI eutectic[J].Electrochimica Acta,2014:104-113. |
| [11] | Wang, Lu;Liu, Ya-Lan;Liu, Kui;Tang, Shuang-Ling;Yuan, Li-Yong;Su, Ling-Ling;Chai, Zhi-Fang;Shi, Wei-Qun.Electrochemical extraction of cerium from CeO2 assisted by AlCl3 in molten LiCI-KCI[J].Electrochimica Acta,2014:385-391. |
| [12] | Kui Liu;Ya-Lan Liu;Li-Yong Yuan;Xiu-Liang Zhao;Zhi-Fang Chai;Wei-Qun Shi.Electroextraction of gadolinium from Gd_2O_3 in LiCl-KCl-AlCl_3 molten salts[J].Electrochimica Acta,2013:732-740. |
| [13] | 张雷;陈红梅;欧阳义芳;杜勇.Amorphous forming ranges of Al-Fe-Nd-Zr system predicted by Miedema and geometrical models[J].稀土学报（英文版）,2014(4):343-351. |
| [14] | Ipser, H.;Mikula, A.;Katayama, I..Overview: The emf method as a source of experimental thermodynamic data[J].Calphad: Computer Coupling of Phase Diagrams and Thermochemistry,20103(3):271-278. |
| [15] | Castrillejo Y;Bermejo MR;Arocas PD;Martinez AM;Barrado E.The electrochemical behaviour of the Pr(III)/Pr redox system at Bi and Cd liquid electrodes in molten eutectic LiCl-KCl[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,20052(2):343-358. |
| [16] | SU Yu-zhi;YANG Qi-qin;LIU Guan-kun.Electroreduction of Ho3+ on Nickel Cathode in Molten KCl-HoCl3[J].中国稀土学报（英文版）,2000(01):34-38. |
| [17] | Nourry, C;Massot, L;Chamelot, P;Taxil, P.Electrochemical reduction of Gd(III) and Nd(III) on reactive cathode material in molten fluoride media[J].Journal of Applied Electrochemistry,20096(6):927-933. |
| [18] | Castrillejo Y;Bermejo MR;Arocas PD;Martinez AM;Barrado E.Electrochemical behaviour of praseodymium (III) in molten chlorides[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,20051(1):61-74. |
| [19] | Frederic Lantelme;Thierry Cartailler;Youssef Berghoute.Physicochemical Properties of Lanthanide and Yttrium Solutions in Fused Salts and Alloy Formation with Nickel[J].Journal of the Electrochemical Society,20019(9):C604-C613. |
| [20] | 唐浩;颜永得;张密林;薛云;张志俭;杜卫超;何辉.MgCl2在LiCl-KCl熔盐中的电化学特性[J].物理化学学报,2013(8):1698-1704. |
| [21] | Hao Tang;Batric Pesic.Electrochemical behavior of LaCl_3 and morphology of La deposit on molybdenum substrate in molten LiCl-KCl eutectic salt[J].Electrochimica Acta,2014:120-130. |
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