Abstract
In the preceding Letter Shelef [1] has proposed a mechanism for NO decomposition involving coordinatively unsaturated Cu2+ sites on which NO molecules are chemisorbed in the gem-dinitrosyl form. At reaction temperature this complex is supposed to decompose into N2 and O2 without involving a redox process. That such a process is feasible has been pointed out by Moser [2]. Shelef cited several reasons in support of this view and others that have led him to think that a cyclic redox mechanism is not operative. These arguments are countered herein and some new data are presented showing the infrared spectra of surface species recorded under in situ reaction conditions.
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References
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On leave from Central Research Institute for Chemistry, Hungarian Academy of Sciences, H-1525 Budapest, Hungary.
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Keith Hall, W., Valyon, J. Mechanism of NO decomposition over Cu-ZSM-5. Catal Lett 15, 311–315 (1992). https://doi.org/10.1007/BF00765276
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DOI: https://doi.org/10.1007/BF00765276