Preparation and studies of a new ammonium vanadium bronze, (NH4)xV2O5

Palanisamy, T. ; Gopalakrishnan, J. ; Sastri, M. V. C. (1974) Preparation and studies of a new ammonium vanadium bronze, (NH4)xV2O5 Journal of Solid State Chemistry, 9 (3). pp. 273-278. ISSN 0022-4596

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A new bronze-type phase of composition (NH4)0.40±0.02V2O5 is obtained around 230°C during the thermal decomposition of NH4VO3 in hydrogen atmosphere. The bronze intermediate is characterized by X-ray diffraction, electrical conductivity, magnetic susceptibility, and ESR studies. It is found to be isostructural with other known β-type vanadium bronzes of general formula MxV2O5, where M is usually a monovalent metal. Electrical conductivity and magnetic studies indicate the localized character of conduction electrons at V+4 sites. At high temperatures (>400°C), the bronze undergoes decomposition and subsequent reduction to V2O3 in hydrogen atmosphere.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:12753
Deposited On:10 Nov 2010 08:40
Last Modified:03 Jun 2011 06:16

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