Organo-NOx formation-decomposition as the origin of the changes in the low temperature NO-TPD profile in the presence of n-decane on Ag/γ-Al2O3 - Sorbonne Université Access content directly
Journal Articles Catalysis Communications Year : 2014

Organo-NOx formation-decomposition as the origin of the changes in the low temperature NO-TPD profile in the presence of n-decane on Ag/γ-Al2O3

Abstract

The NOx desorption profiles obtained in O2-He and n-C10-O2-He were compared on γ-Al2O3 and Ag/γ-Al2O3. On Ag/γ-Al2O3, the low-temperature NOx desorption profiles obtained in n-C10-O2-He were significantly different from those obtained in O2-He. In particular, at 190-220 °C excess release of NO, instead of NO2, was observed concomitantly with n-C10 consumption. This is interpreted as the result of the formation-decomposition of organo-NOx species issued from the interaction of NO2 and hydrocarbons initially chemisorbed on Al2O3 and activated on Ag species, respectively. The occurrence of such a phenomenon at temperatures close to those at which the n-C10-SCR reaction starts provides support for the involvement of the organo-NOx species as intermediates.
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Dates and versions

hal-00982268 , version 1 (23-04-2014)

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Kinga Malinger, Juliette Blanchard, Rachel P. Doherty, Cyril Thomas. Organo-NOx formation-decomposition as the origin of the changes in the low temperature NO-TPD profile in the presence of n-decane on Ag/γ-Al2O3. Catalysis Communications, 2014, 46, pp.81-85. ⟨10.1016/j.catcom.2013.11.017⟩. ⟨hal-00982268⟩
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