Abstract
Ammonia oxidation to N2 over a Cu-SAPO-34 SCR catalyst was studied with the intent of determining if the mechanism is the direct oxidation of NH3 to N2 or proceeds through a two-step pathway where NH3 is oxidized to NO, with the NO then reacting with available NH3 through the SCR reaction to produce N2. NH3 oxidation data show that some NO is indeed formed and the NO selectivity is dependent on the amount of NH3 adsorbed on the surface, and thus on the adsorption time and temperature. This is due to the ratio of NO formed to adsorbed NH3 downstream along the monolith channel. NO selectivity increased as the amount of NH3 adsorbed on the catalyst surface decreased. Overall, the data demonstrate that NH3 to N2 can occur via the NO intermediate pathway, with subsequent reduction by NH3 to N2.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
