REACTION-MECHANISMS FOR THE REDUCTION OF NITRIC-OXIDE BY HYDROCARBONSON CU-ZSM-5 AND RELATED CATALYSTS

In this letter, an overview of the literature on the reaction mechanis m of the reduction of nitric oxide by hydrocarbons in presence of oxyg en is given. It is followed by a discussion of some organic chemistry literature. A new reaction mechanism is proposed which combines two of the reaction mechanisms proposed in the literature and involves a nit roso-intermediate which initiates a radical chain mechanism which lead s to the disproportionation of nitric oxide into nitrogen and nitrogen dioxide. Finally, the reaction mechanisms proposed until now are comp ared.