Phase Equilibria in the La2O3–V2O3–V2O5 System at 1200 °C
- 1 March 1983
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 56 (3) , 689-694
- https://doi.org/10.1246/bcsj.56.689
Abstract
The phase equilibria in the La2O3–V2O3–V2O5 system were established at 1200 °C by changing oxygen partial pressures from −0.68 (air) to −13.00 in terms of logPO2. In this system, 0.81La2O3·0.19V2O5(La1.62V0.38O3.38), 3La2O3·V2O5(La3VO7), 0.71La2O3·0.29V2O5(La1.42V0.58O3.58), LaVO4, LaVO3, VnO2n−1 (n=2–7), and VO2 were stable. LaVO3, LaVO4, La1.62V0.38O3.38, La3VO7, and La1.42V0.58O3.58 have nonstoichiometric compositions. On the basis of the phase equilibria, the Gibbs energies of the reactions:Keywords
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