Research of SO2 Resistance of MnOx Catalyst Modified by Ce for Low Temperature SCR with NH3

Yan Wang; Liu Yang; Wei Ping Liao; Fei Wang

doi:10.4028/www.scientific.net/AMR.356-360.529

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 356-360Research of SO2 Resistance of MnOx Catalyst...

Research of SO₂ Resistance of MnOx Catalyst Modified by Ce for Low Temperature SCR with NH₃

Abstract:

Two catalysts, MnOx and ceria modified MnOx were prepared by deposition-precipitation method and used for low-temperature selective catalytic reduction (SCR) with NH₃ in the presence of SO₂. The catalysts were characterized by X-ray diffraction (XRD), surface area measurement (BET) and thermal gravimetry analysis(TG). The deactivation of MnOx and MnOx-CeO₂ by SO₂ was observed during SCR process. It was found that the resistance to SO₂ could be greatly enhanced for Ce modified MnOx. It was because that the formation of Mn(SO₄)x was prevented and the depositions of (NH₄)₂SO₄ and NH₄HSO₄ were significantly inhibited with the doping of ceria.

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Advanced Materials Research (Volumes 356-360)

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529-532

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.356-360.529

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Online since:

October 2011

Authors:

Yan Wang, Liu Yang, Wei Ping Liao, Fei Wang

Keywords:

Low-Temperature, MnOx, NO, Selective Catalytic Reduction (SCR), SO₂

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