Fe2O3/Al2O3 catalysts for the N2O decomposition in the nitric acid industry

作者：Giecko Grzegorz^*; Borowiecki Tadeusz; Gac Wojciech; Kruk Janusz

来源：Catalysis Today, 2008, 137(2-4): 403-409.

DOI：10.1016/j.cattod.2008.02.008

• nitrous oxide
• decomposition
• nitric acid
• abatement
• iron catalysts

Fe2O3 catalysts supported on Al2O3 were used to remove nitrous oxide from the nitric acid plant simulated process stream (containing O-2, NO and H2O). Catalysts were prepared by the coprecipitation method and were characterized for their physico-chemical properties by BET, XRD, AFM and TPR analysis. A strong influence of the post-preparation heating conditions on the structural and catalytic properties of the catalysts has been evidenced. Laboratory tests revealed 95% conversion of N2O at temperature 750 degrees C and a slight decrease ill activity in the presence of H2O and NO. The catalysts were inert towards decomposition of NO. The pilot-plant reactor and real plant studies (up to 3300 h time-on-stream) confirmed high activity and very good mechanical stability of the catalysts as well as no decomposition of nitric oxide.

• 出版日期2008-9-30