The dissolution of uranium oxides: Thermodynamic and kinetic investigations

被引：5
|
作者：
Bensmain, Belkacem [1 ,2 ]
Chegrouche, Salah [1 ]
Barkat, Mahfoud [1 ]
Mellah, Abdelhamid [1 ]
Nibou, Djamel [2 ]
机构：
[1] Algerian Atom Energy Commiss, Nucl Res Ctr Draria, BP 43, Algiers 16003, Algeria
[2] USTHB, Mat Technol Lab, BP 32, Algiers 16111, Algeria
来源：
HYDROMETALLURGY | 2016年 / 160卷
关键词：
Uranium oxide; Uranyl nitrate; Thermodynamic study; Kinetic study; NITRIC-ACID SOLUTIONS; DIOXIDE; PRECIPITATION; CARBONATE; POWDERS; PELLETS; NITRATE; AUC;
D O I：
10.1016/j.hydromet.2015.12.003
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
This work investigates the dissolution of various uranium oxides in nitric acid medium and the most predominant occurring reaction was determined on the basis of the thermodynamic and kinetic studies. Six uranium oxides were dissolved and studied. The Gibbs free energies of all the reactions Delta(r)G degrees(T) were analyzed by Ulich model (Ulich, 1930) and the predominant dissolution reaction was found to be: 3U(3)O(8(s)) + 20HNO(3(aq)) -> 9 UO2 (NO3)(2(aq)) + 2NO((g)) + 10H(2)O Three reaction order rate models namely the first, the second and the third order were applied on the predominant reaction reported above. According to the kinetics results, our reaction best fits the second order equation rate. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：73 / 78
页数：6
相关论文
共 50 条
  • [31] The oxidation dissolution of uranium oxides in carbonate-peroxide aqueous solution
    Hou, Chenxi
    He, Mingjian
    Li, Chunhui
    Zhang, Meng
    Jiao, Caishan
    He, Hui
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2023, 332 (4) : 917 - 923
  • [32] Role of alveolar macrophages in the dissolution of two different industrial uranium oxides
    HengeNapoli, MH
    Ansoborlo, E
    Claraz, M
    Berry, JP
    Cheynet, MC
    [J]. CELLULAR AND MOLECULAR BIOLOGY, 1996, 42 (03) : 413 - 420
  • [33] Influence of reductive dissolution of iron oxides by S(II) on uranium mobility
    Alexandratos, V. G.
    Behrends, T.
    Van Cappellen, P.
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 2007, 71 (15) : A12 - A12
  • [34] Ultrasound enhancement of dissolution kinetics of uranium oxides in supercritical carbon dioxide
    Trofimov, TI
    Samsonov, MD
    Lee, SC
    Smart, NG
    Wai, CM
    [J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2001, 76 (12) : 1223 - 1226
  • [35] The oxidation dissolution of uranium oxides in carbonate-peroxide aqueous solution
    Chenxi Hou
    Mingjian He
    Chunhui Li
    Meng Zhang
    Caishan Jiao
    Hui He
    [J]. Journal of Radioanalytical and Nuclear Chemistry, 2023, 332 : 917 - 923
  • [36] Thermodynamic and Kinetic Origins of Ferroelectricity in Fluorite Structure Oxides
    Park, Min Hyuk
    Lee, Young Hwan
    Mikolajick, Thomas
    Schroeder, Uwe
    Hwang, Cheol Seong
    [J]. ADVANCED ELECTRONIC MATERIALS, 2019, 5 (03):
  • [37] INVESTIGATIONS ON COMPOUNDS OF URANIUM(IV) WITH PICOLINE-N-OXIDES
    MANHAS, BS
    PAL, S
    TRIKHA, AK
    [J]. SYNTHESIS AND REACTIVITY IN INORGANIC AND METAL-ORGANIC CHEMISTRY, 1993, 23 (01): : 1 - 15
  • [38] Regular Kinetic Features of the Dissolution of Metal Oxides in Acidic Media
    Gorichev, I.G.
    Kipriyanov, N.A.
    [J]. Russian Chemical Reviews, 1984, 53 (11) : 1039 - 1061
  • [39] Thermodynamic investigations of uranium-rich binary and ternary alloys
    Smruti Dash
    Kaushik Ghoshal
    T. R. G. Kutty
    [J]. Journal of Thermal Analysis and Calorimetry, 2013, 112 : 179 - 185
  • [40] Thermodynamic investigations of uranium-rich binary and ternary alloys
    Dash, Smruti
    Ghoshal, Kaushik
    Kutty, T. R. G.
    [J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2013, 112 (01) : 179 - 185
12345