In situ analysis for spontaneous reduction of Eu3+ in LiCl pyroprocessing media at 923 K

被引：21
作者：
Kim, Tack-Jin [1 ]
Jeong, Yong-Kwang [2 ]
Kang, Jun-Gill [2 ]
Jung, Yongju [3 ]
Ahn, Do-Hee [1 ]
Lee, Han-Soo [1 ]
机构：
[1] Korea Atom Energy Res Inst, Taejon 305353, South Korea
[2] Chungnam Natl Univ, Dept Chem, Taejon 305764, South Korea
[3] Korea Univ Technol & Educ, Dept Appl Chem Engn, Cheonan 330780, South Korea
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2010年 / 286卷 / 01期
关键词：
Europium chloride; LiCl; Pyroprocessing; Molten salt; Potentiostatic method; Spectroscopy; THERMODYNAMIC PROPERTIES; KCL; SEPARATION; PLUTONIUM; EU(III); URANIUM; EUCL3;
D O I：
10.1007/s10967-010-0651-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The spontaneous reduction of Eu3+ to Eu2+ was examined when EuCl3 was added into a pyroprocessing media of LiCl molten salt at 923 K. The amount of Eu2+ was calculated by measuring the total charge consumed to oxidize Eu2+ ions to Eu3+ ions. The concentration ratio of Eu2+ to Eu3+ was estimated to be about 0.40 in the media. In addition, it is confirmed that the reduction of Eu3+ to Eu2+ is caused by the oxidation power of Cl- to Cl-2. The coexistence of Eu3+ and Eu2+ in the LiCl molten salt system was examined by UV-Visible and luminescence spectroscopy. The molar absorptivities of Eu3+ and Eu2+, calculated from UV-Visible absorption spectra, were 423 and 1954 M-1 cm(-1), respectively.
引用
收藏
页码：283 / 286
页数：4
相关论文
共 19 条
  • [1] Electrode processes of uranium ions and electrodeposition of uranium in molten LiCl-KCl
    Gao Fanxing
    Wang Changshui
    Liu Lisheng
    Guo Jianhua
    Chang Shangwen
    Chang Li
    Li Ruixue
    Ouyang Yinggen
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2009, 280 (01) : 207 - 218
  • [2] Chemical behavior of fission products in the pyrochemical process
    Hur, Jin-Mok
    Kim, Tack-Jin
    Choi, In-Kyu
    Do, Jae Bum
    Hong, Sun-Seok
    Seo, Chung-Seok
    [J]. NUCLEAR TECHNOLOGY, 2008, 162 (02) : 192 - 198
  • [3] Jeong SM, 2006, J RADIOANAL NUCL CH, V268, P349, DOI 10.1556/JRNC.268.2006.2.24
  • [4] Photophysics of RbCl co-doped with Eu2+ and Eu3+
    Kang, JG
    Hong, JP
    Won, SJ
    Kim, CO
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2003, 64 (04) : 631 - 639
  • [5] Separation of actinides from rare earth elements by means of molten salt electrorefining with anodic dissolution of U-Pu-Zr alloy fuel
    Kinoshita, K
    Tadafumi, K
    Tadashi, I
    Ougier, M
    Glatz, JP
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2005, 66 (2-4) : 619 - 624
  • [6] Phase diagram and Raman spectroscopy of EuCl2-NaCl binary mixtures
    Koyama, Y
    Takagi, R
    Iwadate, Y
    Fukushima, K
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 260 (1-2) : 75 - 79
  • [7] Kinetics of electrode processes and thermodynamic properties of europium chlorides dissolved in alkali chloride melts
    Kuznetsov, S. A.
    Gaune-Escard, M.
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2006, 595 (01) : 11 - 22
  • [8] Electrochemical and calorimetric investigations of some thermodynamic properties of EuCl3 and EuCl3 dissolved in alkali chloride melts
    Kuznetsov, SA
    Rycerz, L
    Gaune-Escard, M
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2005, 344 (1-3) : 152 - 157
  • [9] Electrochemical and thermodynamic properties of EuCl3 and EuCl2 in an equimolar NaCl-KCl melt
    Kuznetsov, SA
    Rycerz, L
    Gaune-Escard, M
    [J]. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 2001, 56 (11): : 741 - 750
  • [10] Kuznetsov SA, 2007, Z NATURFORSCH A, V62, P445
12