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Journal of thermal analysis

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

Thermal reactivity of sodium manganese decavanadates

  • C. Göczeová
Article
  • 29 Downloads

Abstract

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.

Keywords

Sodium Polymer Physical Chemistry Hydrate Manganese 
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.

Zusammenfassung

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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