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The equilibrium constant for the reaction of ZnO + H2 and the chemical vapor transport of zno via the Zn + H2O reaction

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Abstract

Using a gas transpiration method, the equilibrium constant for the reaction ZnO(s) + H2(v)⇄ Zn(v) + H2O(v) was determined directly in the temperature interval 592–950°C. The data are described by the equation log10K = [-11.794 × 103/T] + 8.040 with ΔH° = 53.97 Kcal/mole and ΔS° = 36.79 e.u. Based on this Information, vapor-solid gas concentration curves useful for defining conditions for the chemical vapor transport of ZnO via the reverse of the above reaction have been computer calculated.

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Authors and Affiliations

  1. Exploratory Technology, T. J. Watson Research Center, 10598, Yorktown Heights, New York

    A. Reisman (Manager)

  2. T. J. Watson Research Center, 10598, Yorktown Heights, New York

    M. Berkenblit (Research Staff Members), R. Ghez (Research Staff Members) & S. A. Chan (Laboratory Specialist)

Authors
  1. A. Reisman
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  2. M. Berkenblit
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  3. R. Ghez
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  4. S. A. Chan
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Reisman, A., Berkenblit, M., Ghez, R. et al. The equilibrium constant for the reaction of ZnO + H2 and the chemical vapor transport of zno via the Zn + H2O reaction. J. Electron. Mater. 1, 395–419 (1972). https://doi.org/10.1007/BF02659165

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  • DOI: https://doi.org/10.1007/BF02659165

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