Catalysis Letters

, Volume 128, Issue 3–4, pp 313–317 | Cite as

A Possible Mechanism of Hydrogen Reverse Spillover in Platinum-Zeolite Catalysts

  • M. N. Mikhailov
  • I. V. Mishin
  • L. M. Kustov


Quantum chemical methods (X3LYP and MP2) were applied to investigate the structure and reactivity of anion-radical site in HZSM-5 zeolite. The interaction of hydrogen zeolite with a platinum particle can involve electron transfer to a Brønsted acid site to form an anion-radical fragment. A low stability of the latter favors the elimination of atomic hydrogen from the OH-group, an exothermic process with low activation energy. In the metal-zeolite catalysts, the anion-radical fragment formed due to withdrawal of electronic density from the metal particle can be responsible for the reverse spillover of Brønsted hydrogen onto the metal surface.


Brønsted acid site Electron transfer Anion-radical site Hydrogen elimination 



The authors gratefully acknowledge the critical reading of the manuscript by Dr. Walter H. Niehoff.


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • M. N. Mikhailov
    • 1
  • I. V. Mishin
    • 1
  • L. M. Kustov
    • 1
  1. 1.N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of SciencesRussian FederationMoscowRussia

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