Effect of SO₂ on Mn-Mg-O_x Catalyst Treated by Non-Thermal Plasma for NO Catalytic Oxidation

Abstract:

The effect of MgO addition on SO₂ tolerance of MnO_x for the NO catalytic oxidation was investigated in this work. MgO addition significantly promotes the SO₂ resistance of MnO_x at low temperature range of 50–250°C. The slight decrease in catalytic activity over Mn-Mg-O_x exposure to SO₂ is attributed to the partially deactivation of the catalytic active site poisoned by SO₂. Through XRD and FT-IR characterization, MgO may effectively inhibit the competitive adsorption between NO_x and SO₂ in manganese site, and enhance SO₂ adsorption on the magnesia surface.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 490-493
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.490
• Online since: July 2014
• Authors: Rui Yun Lai*, Xiao Long Tang, Hong Hong Yi, Kai Li, Ying Xiang, Xin Sun
• Keywords: Catalytic Oxidation, Mn-Mg-O_x Catalysts, NO, Non-Thermal Plasma

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