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Thermodynamic properties of the V2O3−V4O7 system at temperatures from 1400° to 1700°K

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Abstract

Phase equilibria in the V2O3−V4O7 system were studied at 1400°, 1500°, 1600°, and 1700°K by varying the oxygen partial pressure. Besides the three phases of V2O3, V3O5, and V4O7 which were stable in this system, the vanadium sesquioxide has an extensive range of solid solution at the above mentioned temperatures. The standard free energies of oxidation of both V2O3 to V3O5 and V3O5 to V4O7 were precisely determined on the basis of equilibrium oxygen partial pressures at each above temperature. The standard enthalpy and the entropy changes of these reactions were also calculated from the free energy data.

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References

  1. See footnote of Katsura and Hasegawa, 1967, in Ref. 2., p. 561.

    Article  CAS  Google Scholar 

  2. T. Katsura and M. Hasegawa:Bull. Chem. Soc. Japan, 1967, vol. 40, p. 561.

    Article  CAS  Google Scholar 

  3. G. Andersson:Acta. Chem. Scand., 1954, vol. 8, p. 1599.

    Article  CAS  Google Scholar 

  4. A. Burdese:Ann. Chim. Rome, 1957, vol. 47, p. 785; G. Grossman, O. W. Proskurenko, and Ss. M. Arija:Z. Anorg. Allgem. Chem., 1960, vol. 305, p. 121; K. Kosuge:J. Phys. Chem. Solids, 1967, vol. 28, p. 1613.

    CAS  Google Scholar 

  5. T. Katsura and A. Muan:Tran.s TMS-AIME, 1964, vol. 230, p. 77.

    CAS  Google Scholar 

  6. K. Kiukkola and C. Wagner:J. Electrochem. Soc., 1957, vol. 104, p. 379.

    Article  Google Scholar 

  7. J. Weissbart and R. Ruka:Rev. Sci. Instr., 1961, vol. 32, p. 593.

    Article  CAS  Google Scholar 

  8. T. Nakazono:J. Chem. Soc. Japan, 1921, vol. 42, p. 761, see also I. Iwasaki, T. Katsura, M. Yoshida, and T. Tarutani:Japan Analyst, 1957, vol. 6, p. 211.

    CAS  Google Scholar 

  9. F. Aebi:Helv. Chim. Acta, 1948, vol. 31, p. 8.

    Article  CAS  Google Scholar 

  10. J. Smiltens:J. Am. Chem. Soc., 1957, vol. 79, p. 4877.

    Article  CAS  Google Scholar 

  11. W. Nernst:Theoretische Chemie, p. 122, F. Enke, Stuttgart, 1926.

    Google Scholar 

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Authors and Affiliations

  1. Department of Chemistry, Tokyo Institute of Technology, Tokyo, Japan

    Masataka Wakihara (Graduate Student) & Takashi Katsura (Associate Professor)

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  1. Masataka Wakihara
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  2. Takashi Katsura
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Wakihara, M., Katsura, T. Thermodynamic properties of the V2O3−V4O7 system at temperatures from 1400° to 1700°K. Metall Trans 1, 363–366 (1970). https://doi.org/10.1007/BF02811543

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  • DOI: https://doi.org/10.1007/BF02811543

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