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The thermal decomposition of ammonium paratungstate

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Abstract

The thermal decomposition of monoclinic, orthorhombic and freeze-dried ammonium paratungstate (APT) has been studied over the temperature range 100 to 500°C using thermogravimetry, evolved gas analysis. X-ray diffraction and electron optical techniques. The particle morphologies of the original APT have been related to the morphologies of the products of decomposition. A mechanism of decomposition which postulates the formation and subsequent decomposition of amorphous ammonium metatungstate is proposed and substantiated by X-ray diffraction analysis and evolved gas analysis.

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Authors and Affiliations

  1. Metallurgy Department, Manchester University, Joint University and UMIST Metallurgy Building, Grosvenor Street, Manchester, UK

    A. K. Basu & F. R. Sale

Authors
  1. A. K. Basu
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  2. F. R. Sale
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Basu, A.K., Sale, F.R. The thermal decomposition of ammonium paratungstate. J Mater Sci 12, 1115–1124 (1977). https://doi.org/10.1007/BF00553601

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  • DOI: https://doi.org/10.1007/BF00553601

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