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Catalysis Letters

, Volume 60, Issue 3, pp 167–171 | Cite as

Study of the ammonia decomposition over iron catalysts

  • Walerian Arabczyk
  • Jacek Zamlynny
Article

Abstract

The decomposition of ammonia is a reaction associated with the process of the nitriding of metals. The kinetics of the ammonia decomposition on iron catalysts has been studied using a differential reactor with internal mixing. The balance between the inlet and outlet ammonia quantity has been used to determine the degree of conversion. The rate of ammonia decomposition could be described by the following expression: r = k0 exp (Ea/RT)pNH3. The activation energy of the ammonia decomposition process has been found for samples with potassium as E a= 96 kJ/mol, for samples without potassium as E a= 87 kJ/mol.

ammonia decomposition iron catalyst kinetics 

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References

  1. [1]
    K. Aika, L.J. Christiansen, I. Dybkjaer, J.B. Hansen, P.E. Hojlund Nielsen, A. Nielsen, P. Stolze and K. Tamaru, Ammonia. Catalysis and Manufacture (1995).Google Scholar
  2. [2]
    M.I. Temkin, J. Phys. Chem. USSR 14 (1940) 1241.Google Scholar
  3. [3]
    M.I. Temkin, Zh. Fiz. Khim. 24 (1950) 1312.Google Scholar
  4. [4]
    S.R. Logan, R.L. Moss and R.L. Kemball, Trans. Faraday Soc. 54 (1958) 922.CrossRefGoogle Scholar
  5. [5]
    Z. Kowalczyk, J. Sentek, S. Jodzis, M. Muhler and O. Hinrichsen, J. Catal. 169 (1997) 407.CrossRefGoogle Scholar
  6. [6]
    W. Arabczyk and M. Jakrzewska, in: Adv. Mater. Technol., Gliwice, Zakopane (1995) p. 21.Google Scholar
  7. [7]
    W. Arabczyk and M. Jakrzewska, Prace Naukowe Inst. Technol. Nieorgan. Nawoz. Mineral. Politech. Wrocławska 42 (1995) 103.Google Scholar
  8. [8]
    W. Arabczyk and K. Kałucki, in: Konferencja Katalizatory Przemian Gazu Ziemnego, ed. K. Dolny (1996) p. 139; Langmuir, to be published.Google Scholar
  9. [9]
    W. Arabczyk, U. Narkiewicz and K. Kałucki, Vacuum 45 (1994) 267.CrossRefGoogle Scholar
  10. [10]
    W. Arabczyk and K. Kałucki, in: New Frontiers in Catalysis, Proceedings of the 10th International Congress on Catalysis (Elsevier, Amsterdam, 1993) pp. 2539-2542.Google Scholar
  11. [11]
    W. Arabczyk and U. Narkiewicz, Appl. Surf. Sci. 108 (1997) 379.CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • Walerian Arabczyk
    • 1
  • Jacek Zamlynny
    • 1
  1. 1.Technical University of SzczecinSzczecinPoland

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