氮氧化物是大气主要污染源之一,危害人体健康,并引发酸雨。随着环保法规的升级,氮氧化物排放浓度的限值要求越来越高。这要求脱硝工艺尤其是脱硝催化剂必须进一步提高脱硝性能。以ZSM-5分子筛为载体,以铜、铈为活性组分,制备脱硝催化剂活性组分;用铝胶将脱硝催化剂活性组分附着在蜂窝状陶瓷上,得到脱硝催化剂。与ZSM-5分子筛相比,脱硝催化剂活性组分增加了4.73%的铜（以CuO质量分数计）和5.40%的铈（以CeO₂质量分数计）,比表面积由287.04 m²/g降到275.05 m²/g,孔容、孔径未发生变化,酸性增强,晶型基本保持不变。脱硝催化剂最佳反应条件：反应时间≥60 min,反应温度≥250 ℃,空速≤10 200 h^-1。脱硝催化剂在最佳反应条件下的脱硝效率约为85%。脱硝催化剂能适应较低的反应温度,并且具有较高的脱硝效率。

Nitrogen oxide is one of the main air pollution sources,which is harmful to human health and causes acid rain. With the upgrading of environmental protection regulations,the limit of NO_x emission concentration is becoming lower and lower.It requires the denitration process,especially the denitration catalyst,to further improve the denitration performance. Using ZSM-5 molecular sieve as carrier,copper and cerium as active components,the active components of denitration cata-lyst were prepared.The active components of denitration catalyst were attached to honeycomb ceramics with aluminum glue to obtain denitration catalyst.Compared with ZSM-5 molecular sieve,the active component of denitration catalyst increased by 4.73% of Cu（calculated by the mass fraction of CuO） and 5.40% of Ce（calculated by the mass fraction of CeO₂）,and the spe-cific surface decreased from 287.04 m²/g to 275.05 m²/g,and the pore volume and the pore size remained unchanged,and the acidity increased,and the crystal form remained basically unchanged.The optimal reaction conditions of denitrification cata-lyst were that reaction time was more than or equal to 60 min,temperature was more than or equal to 250 ℃,and airspeed was less than or equal to 10 200 h^-1.The denitration efficiency of the catalyst was about 85% under the optimum reaction conditions.The catalyst could adapt to lower reaction temperature and had higher denitration efficiency.