The activated carbons from coal were treated by HNO3(named as NAC) and used as carriers to load 7% Ce(named as Ce(0.07)/NAC) by impregnation method. The physical and chemical properties were investigated by thermogravimetric-differential thermal analysis(TG-DTA), Brunauer-Emmett-Teller(BET), X-ray diffraction(XRD), X-ray photoelectron spectra(XPS), scanning electron microscopy(SEM) and NH3-temperature programmed desorption(NH3-TPD) and NO-temperature programmed desorption techniques. The catalytic activities of Ce(0.07)/NAC were evaluated for the low temperature selective catalytic reduction(SCR) of NO with C3H6 using temperature-programmed reaction(TP-reaction) in NO, C3H6, O2 and N2 as a balance. The results showed that the specific surface area of Ce(0.07)/NAC was 850.8 m2/g and less than NAC, but Ce oxides could be dispersed highly on the activated carbons. Ce oxides could change acid sites and NO adsorption as well as oxygen-containing functional groups of activated carbons, and Ce4+ and Ce3+ coexisted in catalysts. The conversion of NO with C3H6 achieved 70% at 280 °C over Ce(0.07)/NAC, but with the increase of O2 concentration, heat accumulation and nonselective combustion were exacerbated, which could cause surface ashing and roughness, resulting in a sharp decrease of catalytic activities. The optimum O2 concentration used in the reaction system was 3% and achieved the high conversion of NO and the widest temperature window. The conversion of NO was closely related to the NO concentrations and [NO]/[C3H6] ratios, and the stoichiometric number was just close to 2:1, but the presence of H2 O could affect the denitration efficiency of catalyst. The activated carbons from coal were treated by HNO3 (named as NAC) and used as carriers to load 7% Ce (named as Ce (0.07) / NAC) by impregnation method. The physical and chemical properties were investigated by thermogravimetric-differential thermal analysis (TG-DTA), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectra (XPS), scanning electron microscopy (SEM) and NH3-temperature programmed desorption NO-temperature programmed desorption techniques. The catalytic activities of Ce (0.07) / NAC were evaluated for the low temperature selective catalytic reduction (SCR) of NO with C3H6 using temperature-programmed reaction (TP-reaction) in NO, C3H6, O2 and N2 as a balance. The results showed that the specific surface area of ​​Ce (0.07) / NAC was 850.8 m2 / g and less than NAC, but the amount of Ce oxides could change highly on the activated carbons. Ce oxides could change acid sites and NO adsorption as well as oxygen-containing functional groups of activated carbons, and c The conversion of NO with C3H6 achieved 70% at 280 ° C over Ce (0.07) / NAC, but with the increase of O2 concentration, heat accumulation and nonselective combustion were exacerbated, which could cause surface ashing and roughness, resulting in a sharp decrease of catalytic activities. The optimum O2 concentration used in the reaction system was 3% and achieved the high conversion of NO and the widest temperature window. The conversion of NO was closely related to the NO concentrations and [NO ] / [C3H6] ratios, and the stoichiometric number was just close to 2: 1, but the presence of H2 O could affect the denitration efficiency of catalyst.