Subsolidus-Phase Equilibria in the System MgO-V2O5-MoO3

V. G. Zubkov, I. A. Leonidov, Kenneth R Poeppelmeier, V. L. Kozhevnikov

Research output: Contribution to journalArticle

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Abstract

The phase relations in the system MgO-V2O5-MoO3 were studied and the subsolidus region of the phase diagram was constructed. The new compound Mg2.5VMoO8 was discovered on the join of MgMoO4-Mg3V2O8. Mg2.5VMoO8 crystallizes in the orthorhombic space group Pnma (No. 62) with cell dimensions a = 5.0515(1) Å, b = 10.3455(2) Å, c = 17.4683(4) Å, and Z = 6. The structure is a framework of MoO4 and VO4 tetrahedra with linking octahedral and trigonal prismatic MgO6 groups. The molybdenum and vanadium cations preserve their highest oxidation state, and the electrical neutrality of the crystalline lattice is maintained by partial occupancy of magnesium sites. Simple quasibinary equilibria were established between MgMoO4 and MoV2O8, V2-xMo2xO5, MgV2O6, and Mg2V2O7.

Original languageEnglish
Pages (from-to)197-201
Number of pages5
JournalJournal of Solid State Chemistry
Volume111
Issue number1
DOIs
Publication statusPublished - Jul 1994

Fingerprint

Vanadium
Molybdenum
Crystal lattices
Phase equilibria
Magnesium
Phase diagrams
Cations
Positive ions
Crystalline materials
Oxidation
tetrahedrons
vanadium
molybdenum
magnesium
phase diagrams
cations
oxidation
cells
molybdenum trioxide
vanadium pentoxide

ASJC Scopus subject areas

  • Materials Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Cite this

Subsolidus-Phase Equilibria in the System MgO-V2O5-MoO3. / Zubkov, V. G.; Leonidov, I. A.; Poeppelmeier, Kenneth R; Kozhevnikov, V. L.

In: Journal of Solid State Chemistry, Vol. 111, No. 1, 07.1994, p. 197-201.

Research output: Contribution to journalArticle

Zubkov, V. G. ; Leonidov, I. A. ; Poeppelmeier, Kenneth R ; Kozhevnikov, V. L. / Subsolidus-Phase Equilibria in the System MgO-V2O5-MoO3. In: Journal of Solid State Chemistry. 1994 ; Vol. 111, No. 1. pp. 197-201.
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abstract = "The phase relations in the system MgO-V2O5-MoO3 were studied and the subsolidus region of the phase diagram was constructed. The new compound Mg2.5VMoO8 was discovered on the join of MgMoO4-Mg3V2O8. Mg2.5VMoO8 crystallizes in the orthorhombic space group Pnma (No. 62) with cell dimensions a = 5.0515(1) {\AA}, b = 10.3455(2) {\AA}, c = 17.4683(4) {\AA}, and Z = 6. The structure is a framework of MoO4 and VO4 tetrahedra with linking octahedral and trigonal prismatic MgO6 groups. The molybdenum and vanadium cations preserve their highest oxidation state, and the electrical neutrality of the crystalline lattice is maintained by partial occupancy of magnesium sites. Simple quasibinary equilibria were established between MgMoO4 and MoV2O8, V2-xMo2xO5, MgV2O6, and Mg2V2O7.",
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