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Variations in the linear size of precipitated catalysis for ammonia synthesis during their reduction and oxidation

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Abstract

According to dilatometric analysis data, it has been shown that at low temperatures both catalyst reduction steps are accompanied by sample expansion. With increasing temperature, the value of the expension effect decreases to zero, and after then only contraction is observed. Mild oxidation of the reduced catalyst at room temperature leads to its contraction.

Abstract

Найдено, что для обенх стадий восстановления каталнзатора (перехода гематита в магнетит н магнетнта в железо) протеканне процесса прн ннзкой темперасопровождается расширением образца. Величина эффекта расшнрения туре с ростом температуры уменьщается, обрашается в нуль, далее наблюдается только сжатие. Мягкое окнсление восстановленного каталнзатора при комнатной температуре приводнт к сжатню образца.

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References

  1. G. N. Demina, L. A. Rudnitskii, A. M. Alekseev, P. D. Rabina, L. D. Kuznetsov, A. A. Bondareva: Kinet. Katal.23, 451 (1982).

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Rudnitskii, L.A., Demina, G.N., Makurina, N.A. et al. Variations in the linear size of precipitated catalysis for ammonia synthesis during their reduction and oxidation. React Kinet Catal Lett 25, 297–300 (1984). https://doi.org/10.1007/BF02064419

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  • DOI: https://doi.org/10.1007/BF02064419

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