可商业化催化剂Cu/γ-Al2O3的制备和活性研究

用浸渍法制备出低成本的可商业化的Cu/γ-Al₂O₃催化剂，催化剂在NH₃做还原剂下对NO有良好的活性。研究了Cu负载量和煅烧温度对催化剂结构和催化活性的影响，借助XRD和N₂吸附法对催化剂的晶体结构、比表面积和平均孔径进行了表征；以NH₃为还原剂，NO转化率为活性评价指标，对所制备催化剂进行了选择催化还原反应研究。结果表明：Cu负载量对催化活性有影响，而煅烧温度的影响不大。煅烧温度为723K，Cu负载量为质量分数10%时，催化剂的活性最高。

Preparation and activity investigation of commercialized catalyst Cu/γ-Al2O3

Series low-cost and commercialized catalysts, Cu/γ-Al₂O₃, were prepared by an immersion method. The catalysts have a good reaction activity of NO with NH₃ acted as a reductant. For investigation of the influence of Cu loading amounts and calcination temperatures, XRD and N₂-BET were used to characterize the crystal structure, specific surface and the average pore size. The selective catalytic reduction of NO with NH₃ was studied over Cu/γ-Al₂O₃. The results indicate that the loading amount of Cu influences the catalyst activity, but the influence of the calcination temperature is not big. The catalytic activity of the catalyst with 10% Cu loading prepared at 723K is higher than that of others.