Preparation and Performance of Several Non-Precious Metal Oxides Catalysts for the Low Temperature SCR of NOx with NH₃

Abstract:

A series of non-precious metal oxides catalysts were prepared for low-temperature selective catalytic reduction (SCR) of NOx with NH3 in a fixed bed reactor. The catalytic performance was evaluated by the removal efficiency of NOx and N₂ selectivity which were respectively detected by flue gas analyzer and flue gas chromatograph. Furthermore, the components of gas products from the above experiments were analysed with 2010 GC-MS. The results illustrated that the MnO₂ exhibited the highest NOx conversion to 95.46% and the highest selectivity of N₂ to 100% at temperature of 393K, then followed ZrO₂, Al₂O₃ and Fe₂O₃.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 1528-1534
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.1528
• Online since: October 2011
• Authors: Wei Fang Dong
• Keywords: Al₂O₃, Fe₂O₃, MnO₂, NO_x, SCR, Zro₂

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