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Interaction between catalysts for ammonia synthesis and oxygen

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Abstract

Reversible poisoning of the catalysts for ammonia synthesis by oxygen has been used to eliminate the pyrophoric nature of the reduced catalysts via their treatment by the mixtures of nitrogen, hydrogen or helium with oxygen at catalysis temperatures. Kinetic studies of oxygen sorption, catalyst structure, activity and stability to the secondary oxidation of the samples partially oxidized at various temperatures have revealed that the optimum temperatures to eliminate the pyrophoric effect are 673–773 K.

Abstract

Явление обратимого отравления катализатора синтеза аммиака кислородом использовано для устранения пирофорности восстановленных катализаторов путем обработки их смесями азота, водорода или гелия с кислородом при температурах катализа. Исследование кинетики сорбции кислорода, структуры, активности и устойчивости к дальнейшему окислению частично окисленных при различных температурах катализаторов показало, что для устранения пирофорности оптимальными являются температуры 673–773 K.

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References

  1. T.M. Peev, A.V. Krylova, V.V. Morozov: Kinet. Katal.,22, 1260 (1981)

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Krylova, A.V., Tsarev, V.I., Peev, T.M. et al. Interaction between catalysts for ammonia synthesis and oxygen. React Kinet Catal Lett 30, 229–235 (1986). https://doi.org/10.1007/BF02064297

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  • DOI: https://doi.org/10.1007/BF02064297

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