Ceramics-Silikáty 49, (2) 132 - 137 (2005) |
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REACTIVITY OF FeVO₄ TOWARDS Mg₂V₂O₇ AND PHASE RELATIONS IN THE FeVO₄ - Mg₂V₂O₇ SYSTEM UP TO THE SOLIDUS LINE
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Blonska-Tabero Anna, Kurzawa Maria
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Technical University of Szczecin, Department of Inorganic and Analytical Chemistry,
Al. Piastow 42, 71-065 Szczecin, Poland
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Keywords: XRD, DTA, Iron(III), Orthovanadate(V), Magnesium divanadate(V), Phase equilibria
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Reaction products of FeVO₄ with Mg₂V₂O₇ were investigated in the whole concentration range of the reacting substances. On
the basis of the results obtained a diagram of phase equilibria was worked out for the system FeVO₄ – Mg₂V₂O₇ for the solid
state. Methods applied in the investigations were XRD and DTA. The system FeVO₄ - Mg₂V₂O₇ is a real binary system in the
concentration range up to 50.00 mol% FeVO₄ in initial mixtures. For higher initial FeVO₄ ratio, one obtains an intersection
of the ternary system MgO – V₂O₅ – Fe₂O₃ crossing three subsidiary subsystems each being a three component solid phase
equilibrium system. |
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