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Mo Molybdenum pp 177-213 | Cite as

Molybdate Hydrates with Alkaline Earth Metals

  • Karl-Heinz Tytko
  • Wolf-Dietrich Fleischmann
  • Dieter Gras
  • Eberhard Warkentin
  • Hartmut Katscher
  • Friedrich Schröder
Part of the Gmelin Handbook of Inorganic Chemistry book series (GMELIN, volume M-o / A-B / B / 4)

Abstract

This system has been investigated at 25°C, see Fig. 66, p. 178. The following solid compounds have been found to exist in stable equilibria with the solution: Mg(OH)2, 8MgO · MoO3.48 H2O, 4 MgO · MoO3 ·12 H2O, MgMoO4 · 5 H2O, MgO · 3 MoO3 · 10 H2O, MoO3. The “trimolybdate” 10-hydrate is the only polymolybdate in this sequence [1]. The paramolybdate 3MgO · 7MoO3 · 20H2O was found to exist only in a metastable equilibrium [2]. Because of the slow equilibration when starting from MgO, MoO3, and H2O, the initial materials in this investigation were the compounds MgMoO4 · 5 H2O, MgO · 3 MoO3 · 10 H2O, and Mg3[Mo7O24] · 20 H2O. Selected points on the phase diagram are [1]:

Keywords

Calcium Salt Sodium Molybdate Molybdenum Trioxide Peroxide Oxygen Ammonium Paramolybdate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • Karl-Heinz Tytko
    • 1
  • Wolf-Dietrich Fleischmann
    • 2
  • Dieter Gras
    • 2
  • Eberhard Warkentin
    • 2
  • Hartmut Katscher
  • Friedrich Schröder
  1. 1.Universität GöttingenGermany
  2. 2.Gmelin-InstitutFrankfurt am MainGermany

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