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Applied Magnetic Resonance

, Volume 33, Issue 1–2, pp 153–166 | Cite as

Spin States of Iron-Nitrosyl Adsorption Complexes Formed in Fe-ZSM5 Zeolites

  • S. E. Malykhin
  • A. M. Volodin
  • G. M. Zhidomirov
Article

Abstract.

The capability of extra-framework monoiron sites to adsorb up to three NO molecules has been proven by quantum chemical calculations. Spin states of iron-nitrosyl adsorption complexes formed in Fe-ZSM5 zeolites have been found. For an initial iron site with S = 2, successive adsorption of one, two and three NO molecules changes S to 3/2, 1 and 1/2, respectively. Thus, the electron paramagnetic resonance (EPR) S = 1/2 signal observed after NO adsorption on the Fe-ZSM5 catalyst may be assigned to the Fe2+(NO)3 species. Some peculiarities of the S = 1/2 EPR spectra obtained for iron-nitrosyl species in zeolites are discussed.

Keywords

Zeolite Electron Paramagnetic Resonance Spin State Electron Paramagnetic Resonance Spectrum Electron Paramagnetic Resonance Signal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • S. E. Malykhin
    • 1
  • A. M. Volodin
    • 1
  • G. M. Zhidomirov
    • 1
  1. 1.Boreskov Institute of CatalysisRussian Academy of SciencesNovosibirskRussian Federation

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