Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 158, Issue 1, Pages 355-359Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1381-1169(00)00104-7
Keywords
mechanism of NO; reduction by methane; nitromethane; FTIRS
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For Cu- and Co-ZSM-5, at temperatures around 300 degrees C, the adsorption of nitromethane followed by its acid-catalyzed transformation into isocyanates and melamine as well as the reactivity of these species with respect to oxygen and NO were studied by FTIRS. Both species easily interact with molecular oxygen, while no reaction with NO was observed. In the course of melamine oxidation, partial oxidation products including isocyanates appear to be produced. The reactivity of melamine and isocyanate depends upon the temperature and nature of transition metal cation, being reasonably high to suggest their role as intermediates in the NOxCH4-SCR. (C) 2000 Elsevier Science B.V. All rights reserved.
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