The Study on Mechanism of Thermostability of Wustite-Based Ammonia Synthesis Catalyst

Abstract:

Commercial catalysts were characterized by SEM and XRD. The dendrites of catalysts were clear. Some promoters were solid-solute in crystallites uniformly in the form of f-phase, which blocked the crystallites from growing to improve the activity and thermostability of the catalyst. The reduced catalyst is an (α+f) multi-phase porous alloy. The larger specific surface area and the more active poαsition resulted in excellent activity of catalysts.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 266-269
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.266
• Online since: July 2012
• Authors: Fan Xiao, Yi Fan Jin
• Keywords: Ammonia Synthesis, Catalyst, SEM, Thermostability, X-Ray Diffraction (XRD)

References

[1] Z. Lendzion-Bieluñ, Applied Catalyst A General 227(2002) pp.255-263

[2] Xiao Y L. in: Proceeding of Ammonia Synthesis Catalyst Development & Users Technical Exchange Symposium. Dalian, (2007)

[3] Zhou Y, Wu G H. The technology of Material Analysis – XRD and SEM Analysis. (Harbin: HIT Press.1998)