Solubility of ammonium paratungstate in the system NH3 • H2O-H2O

被引：0
|
作者：
Wan, LS [1 ]
Xu, ZF [1 ]
Shi, ZL [1 ]
机构：
[1] So Inst Met, Fac Mat & Chem Engn, Ganzhou 341000, Peoples R China
来源：
RARE METALS | 2003年 / 22卷 / 01期
关键词：
hydrometallurgy; ammonium paratungstate (APT); regressive analysis; solubility;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The equilibrium solubilities of 5(NH4)O . 12WO(3) . 5H(2)O (APT . 5H(2)O) were determined at the terminal ammonia concentration of 2 mol/L at 87-95degreesC. Experimental data were regressed. The linear functional relation between the solubility of APT . 5H(2)O and the temperature (t / degreesC) is given as y = -588.08 + 7.28t. The solubility of the species as a function of the terminal ammonia concentration (x / mol . L-1) is also achieved: y = 36.76 + 18.86x. The solubility of APT . 5H(2)O produced by ion-exchange method in China is much lower, which is due to much lower silica, much higher NH4Cl, and a small amount of APT . 7H(2)O with low solubility in the APT crystals. APT . 7H(2)O forms because of a large amount of NH4Cl and the low activity of water in the crystallization.
引用
收藏
页码：10 / +
页数：5
相关论文
共 50 条
  • [41] Investigating the solid-gas phase reaction between WO3 powder, NH3 and H2O vapors to prepare ammonium paratungstate
    Hunyadi, David
    Szilagyi, Imre Miklos
    Toth, Attila L.
    Drotar, Eszter
    Igricz, Tamas
    Pokol, Gyoergy
    [J]. INORGANICA CHIMICA ACTA, 2016, 444 : 29 - 35
  • [42] ON THE EXISTENCE OF TERNARY COMPOUNDS IN THE SYSTEM NH3-H2O2-H2O
    MIRONOV, KE
    [J]. CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1960, 38 (11): : 2269 - 2270
  • [43] Theoretical study of formation of ion pairs in (NH3·HCl)(H2O)6 and (NH3·HF)(H2O)6
    Roger L. DeKock
    Benjamin M. Brandsen
    John R. Strikwerda
    [J]. Theoretical Chemistry Accounts, 2011, 130 : 871 - 881
  • [44] Theoretical study of formation of ion pairs in (NH3•HCl)(H2O)6 and (NH3•HF)(H2O)6
    DeKock, Roger L.
    Brandsen, Benjamin M.
    Strikwerda, John R.
    [J]. THEORETICAL CHEMISTRY ACCOUNTS, 2011, 130 (4-6) : 871 - 881
  • [45] A shock-tube study of NH3 and NH3/H-2 oxidation using laser absorption of NH3 and H2O
    Alturaifi, Sulaiman A.
    Mathieu, Olivier
    Petersen, Eric L.
    [J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2023, 39 (01) : 233 - 241
  • [46] (NH4)3PO4-NH3·H2O-H2O体系中磷酸铵溶解度
    杨亮
    万林生
    舒柳飞
    [J]. 有色金属科学与工程, 2016, 7 (02) : 39 - 42
  • [47] STUDY OF SOLUBILITY IN THE SYSTEM CO(NH2)2-K2S2O3-H2O
    BABENKO, AM
    ANDRIANOV, AM
    [J]. JOURNAL OF APPLIED CHEMISTRY OF THE USSR, 1980, 53 (09): : 1573 - 1576
  • [48] H2C6H8O4-NH3-H2O SYSTEM
    AVDONINA, LM
    ISKHAKOVA, LD
    TESLYA, IA
    TURSINA, AI
    [J]. ZHURNAL NEORGANICHESKOI KHIMII, 1990, 35 (03): : 771 - 775
  • [49] Solubility in the NaNO3-NH4NO3-KNO3-H2O system
    Kudryashova, O. S.
    Kataev, A. V.
    Malinina, L. N.
    [J]. RUSSIAN JOURNAL OF INORGANIC CHEMISTRY, 2015, 60 (03) : 355 - 361
  • [50] Solubility in the NaNO3-NH4NO3-KNO3-H2O system
    O. S. Kudryashova
    A. V. Kataev
    L. N. Malinina
    [J]. Russian Journal of Inorganic Chemistry, 2015, 60 : 355 - 361
12345