Abstract
The surface composition of a model catalyst for ammonia synthesis based on iron promoted with aluminum and potassium oxides was investigated by X-ray photoelectron spectroscopy. The surface was studied in oxidized, passivated, and reduced states. The redistribution of components on the surface is studied in the course of reduction in hydrogen and overheating at 700°C. It is shown that a 4–6-mn thick surface layer is enriched with promoters (K and Al) and impurities (Si), while the concentration of iron is low. Promotion by potassium and aluminum oxides makes the catalyst more resistant to overheating.
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.
