Journal of thermal analysis

, Volume 37, Issue 10, pp 2399–2406 | Cite as

Thermal reactivity of sodium manganese decavanadates

  • C. Göczeová


The hydrates of sodium manganese decavanadates are thermally unstable: Na4MnV10O28 ·19H2O decomposes on dehydration to give Mn(VO3)2, NaVO3 and NaV3O8, while Na2Mn2V10O28 · 20H2O decomposes to Mn(VO3)2, NaVO3, NaV3O8 and NaV6O15. At a lowern(Na) ∶n(V) molar ratio in the starting compound, a product containing a bronze with a higher vanadium(IV) content is formed. The mixtures of products are stable in the temperature ranges 500–1000°C, and 610–1000°C, respectively.


Sodium Polymer Physical Chemistry Hydrate Manganese 
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Hydrate von Natrium-magnesiumdekavanadat sind thermisch instabil. Na4MnV10O28·19H2O zersetzt sich durch Dehydratierung in Mn(VO3)2, NaVO3 und NaV3O8 und Na2Mn2V10O28 · 20H2O in Mn(VO3)2, NaVO3, NaV3O8 und NaV6O15. Bei einem niedrigerem n(Na)∶n(V) molarem Verhältnis der Ausgangsverbindungen wird ein Produkt geformt, welches eine Bronze mit einem höherem Vanadium(IV)-gehalt enthält. Das Produktegemisch ist im Temperaturbereich 500°–1000°C bzw. 610°–1000°C thermisch stabil.


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Copyright information

© Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest 1991

Authors and Affiliations

  • C. Göczeová
    • 1
  1. 1.Department of Inorganic Chemistry, Faculty of Natural SciencesKomensky UniversityBratislavaC.S.F.R.

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