The performances of iron ore catalysts on low-temperature SCR of NOx with NH3

Author(s): Shaochen Gu, Keting Gui
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
International Journal of Smart Grid and Clean Energy, vol. 8, no. 5, September 2019: pp. 522-528
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.8.5.522-528

Abstract: The effects of catalysts prepared from different calcined iron ores on low-temperature selective catalytic reduction of NO was studied in this paper. The research produced following two key findings: The active ingredient of the hematite is α-Fe2O3, and the NO conversion using this iron ore as catalyst is over 90% at 240-300 ℃. The main active ingredients of the calcined ferro-manganese ore are Mn2O3 and Fe2O3, and the NO conversation of this kind of catalyst calcined at 450 ℃ can maintain more than 97% at 90-270 ℃ and show high SO2 durability for the SCR reaction. Hence, it is a new kind of catalyst with high efficiency and stable catalytic activity for low-temperature selective catalytic reduction of NO with NH3.

Keywords: iron ore, selective catalytic reduction (SCR), low-temperature, SO2
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