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Journal of Materials Science

, Volume 41, Issue 13, pp 4335–4341 | Cite as

Glycothermal synthesis of vanadium(III) phosphate hydrates

  • T. Nakamura
  • T. Inui
  • M. Inoue
  • T. Miyake
Article

Abstract

Glycothermal reaction of various vanadium compounds with triethyl phosphate yielded two hydrate phases of vanadium(III) phosphate having tetragonal (Phase 1) and monoclinic (Phase 2) crystal systems, depending on the reaction conditions such as phosphorus/vanadium ratio, vanadium starting material, reaction temperature and solvent. Thermal treatment of Phase 2 in an anaerobic condition caused transformation to Phase 1 which finally transformed to VPO4 through an intermediate phase (Phase M). Heat treatment of both the phases in an aerobic condition caused the formation of β-VOPO4.

Keywords

Vanadium Acac Organic Moiety Vanadium Compound Oxidative Atmosphere 

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Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Department of Energy and Hydrocarbon Chemistry, Graduate School of EngineeringKyoto UniversityKyotoJapan
  2. 2.Department of Chemical Engineering, Faculty of EngineeringKansai UniversitySuitaJapan

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