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Catalytic Ammonia Decomposition Over Fe/Fe4N

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Abstract

The catalytic ammonia decomposition over iron and iron nitride, Fe4N, under the atmosphere of ammonia–hydrogen mixtures of different amounts of ammonia in the temperature range of 400–550 °C by means of thermogravimetry has been studied. A differential tubular reactor with mixing has been used. The ammonia concentration in the gas phase during all the process was analysed. The balance between the inlet and outlet ammonia quantity has been used to determine a degree of ammonia conversion and the values of decomposition reaction rate. The activation energy of ammonia decomposition reaction over Fe and Fe4N was found to be 68 and 143 kJ/mol, respectively.

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Acknowledgement

The work has been financed as a Research Project no. NN 507 4461 33.

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Authors and Affiliations

  1. Institute of Chemical and Environment Engineering, Szczecin University of Technology, Pułaskiego 10, 70-322, Szczecin, Poland

    R. Pelka, I. Moszyńska & W. Arabczyk

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  1. R. Pelka
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  2. I. Moszyńska
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  3. W. Arabczyk
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Correspondence to R. Pelka.

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Pelka, R., Moszyńska, I. & Arabczyk, W. Catalytic Ammonia Decomposition Over Fe/Fe4N. Catal Lett 128, 72–76 (2009). https://doi.org/10.1007/s10562-008-9758-0

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  • DOI: https://doi.org/10.1007/s10562-008-9758-0

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