Effect of Sulfation on the Selective Catalytic Reduction of NO with NH3 Over gamma-Fe2O3

Huang HL; Lan Y; Shan WP; Qi FH; Xiong SC; Liao Y; Fu YW; Yang SJ

Catalysis Letters, Vol.144, No.4, 578-584, 2014

DOI10.1007/s10562-013-1174-4 Export Citation

Effect of Sulfation on the Selective Catalytic Reduction of NO with NH3 Over gamma-Fe2O3

Huang HL, Lan Y, Shan WP, Qi FH, Xiong SC, Liao Y, Fu YW, Yang SJ

Because the site for NH3 adsorption and the active site for NH3 oxidization were separated after the sulfation, both the SCR reaction and the catalytic oxidization of NH3 to NO over gamma-Fe2O3 were restrained after the sulfation. As a result, the operation temperature window of gamma-Fe2O3 for the SCR reaction shifted about 100 degrees C to higher temperature after the sulfation.

Keywords:Selective catalytic reduction;gamma-Fe2O3;Sulfation;Mechanism;Catalytic oxidization of NH3 to NO