Peculiarities of doping KBr-2SrBr2 melt with europium at 973 K

被引:0
|
作者
Cherginets, V. L. [1 ]
Rebrov, O. L. [1 ]
Rebrova, T. P. [1 ]
Ponomarenko, T. V. [1 ]
Datsko, Yu. M. [1 ]
Varich, A. G. [1 ]
Yurchenko, O. I. [2 ]
Soloviev, V. V. [3 ]
机构
[1] Natl Acad Sci Ukraine, NTK Inst Single Crystals Natl Acad Sci Ukraine, Inst Scintillat Mat, 60 Nauky Ave, UA-61001 Kharkiv, Ukraine
[2] Kharkov Natl Univ, Svobody Sq 4, UA-61022 Kharkiv, Ukraine
[3] Natl Univ Yuri Kondratyuk Poltava Polytech, 24 Pershotravneva Ave, UA-36011 Poltava, Ukraine
来源
FUNCTIONAL MATERIALS | 2023年 / 30卷 / 04期
关键词
potassium bromide; strontium bromide; europium oxide; melts; solubility; car-bohalogenation; SCINTILLATION PROPERTIES; SOLUBILIZATION; OXIDES;
D O I
10.15407/fm30.04.615
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The processes of Eu2O3 solubilization in molten KBr-2SrBr2 at 973 K were studied from the viewpoint of introducing rare-earth dopants in melts in situ for obtaining activated halide scin-tillators. The control of the solubilization was performed on the basis of current oxide-ion mo-lality (mO2-) which was detected by the potentiometric method. A membrane oxygen electrode Pt(O2)|YSZ was used as an indicator one. The process of Eu2O3 solubilization in KBr-2SrBr2 melt with the formation of Eu2+ does not occur due to slight solubility of EuO or EuOBr. The solubil-ity product of EuO in the studied melt is estimated as 2.8 10-7 mol2 kg-2. The carbohalogenation process (treatment with 'C+Br2' red-ox couple) provides not only the dissolution of oxide, but also complete Eu3+-Eu2+ reduction. The kinetic study of the carbohalogenation process in KBr-2SrBr2 melt containing suspension of Eu oxocompounds show that in this case the plateau-like section arises in 'pO-time' dependences due to participation of two solid substances (carbon and Eu oxo-compounds) in the reaction. The data corresponding to the end of this plateau-like section give another option to estimate the solubility product of EuO as 1.6 10-7 mol2 kg-2 that is in a good agreement with the above value (taking into account the experimental errors). The dissolution of Eu2O3 (at the addition of mEu 2O3 = 5 10-3 mol kg-1) is finished in 40 min and the total deoxi- dization process is finished in 90 min whereas in the reference experiment the duration of the deoxidization of 'pure' melt is 50 min.
引用
收藏
页码:615 / 619
页数:5
相关论文
共 50 条
  • [1] Solubility of oxides in the KBr-BaBr2 eutectic melt (0.495:0.505) at 973 K
    Rebrova, T. P.
    Cherginets, V. L.
    Naumenko, V. A.
    RUSSIAN JOURNAL OF INORGANIC CHEMISTRY, 2014, 59 (04) : 376 - 379
  • [2] Solubility of oxides in the KBr-BaBr2 eutectic melt (0.495: 0.505) at 973 K
    T. P. Rebrova
    V. L. Cherginets
    V. A. Naumenko
    Russian Journal of Inorganic Chemistry, 2014, 59 : 376 - 379
  • [3] KBR-NABR-SRBR2 SYSTEM
    ILYASOV, II
    LEPESHKOV, IN
    ILYASOV, YI
    ZHURNAL NEORGANICHESKOI KHIMII, 1983, 28 (10): : 2619 - 2621
  • [4] Peculiarities of molten KBr-2 SrBr2 mixture deoxidization under the action of reactive gas medium
    Rebrov, O. L.
    Cherginets, V. L.
    Rebrova, T. P.
    Ponomarenko, T. V.
    Varich, A. G.
    Yurchenko, O. I.
    Soloviev, V. V.
    FUNCTIONAL MATERIALS, 2023, 30 (03): : 431 - 436
  • [5] Studies of Phase Equilibria in Ternary KBr-SrBr2-H2O and NaBr-SrBr2-H2O Systems at 308 K
    Ye, Chao
    Gao, Yun-Yun
    Sang, Shi-Hua
    Jiang, Pei-Huan
    Ge, Qi
    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2020, 53 (05) : 183 - 189
  • [6] Stable Phase Equilibria in the Quaternary Systems LiBr-NaBr-SrBr2-H2O and LiBr-KBr-SrBr2-H2O at 288.15 K
    Zeng, Xing-Xing
    Sang, Shi-Hua
    Qi, Xiao-Yun
    Guo, Xiao-Feng
    Cui, Rui-Zhi
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2022, 67 (09): : 2600 - 2608
  • [7] Measurements of (Solid plus Liquid) Phase Equilibria in the Quaternary System NaBr plus KBr + SrBr2 + H2O and Two Subsystems NaBr + SrBr2 + H2O and KBr + SrBr2 + H2O at T=323 K
    Cui, Rui-Zhi
    Nie, Guo-Liang
    Sang, Shi-Hua
    Yang, Lei
    Wang, Zhou-Chi
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2017, 62 (10): : 3187 - 3192
  • [8] Solid-Liquid Equilibria in the Quaternary Systems NaBr-SrBr2-MgBr2-H2O and KBr-SrBr2-MgBr2-H2O at 323 K
    Liu, Qian
    Gao, Yun-yun
    Sang, Shi-hua
    Cui, Rui-zhi
    Zhang, Xue-ping
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2017, 62 (04): : 1264 - 1268
  • [9] Measurements and Predictions of Phase Equilibria in Quinary System NaBr-KBr-MgBr2-SrBr2-H2O at 273.15 K
    Hu, Chun-Tao
    Sang, Shi-Hua
    Gao, Yun-Yun
    Guo, Xiao-Feng
    Cen, Yu-Qiu
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2024, 69 (06): : 2326 - 2338
  • [10] Measurements of Solid-Liquid Equilibria in the Quaternary Systems LiBr-NaBr-KBr-H2O and LiBr-KBr-SrBr2-H2O at 308.15 K
    Guo, Xiao-Feng
    Sang, Shi-Hua
    Ye, Chao
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2022, 67 (09): : 2590 - 2599