以擦镜纸纤维为模板,经硝酸铈和硝酸铜溶液浸渍,煅烧后制得 CuO-CeO2复合材料,分析了其微观形貌和物相组成,研究了其表面性能以及催化脱硝性能,并与商用纳米 CeO2和块状CeO2的进行了对比.结果表明：CuO-CeO2复合材料为长管状,管径约为7μm,其中的 CuO 和CeO2晶粒大小均匀,粒径为5~8 nm,自然堆积形成了纳米尺寸的孔隙；该复合材料中存在立方萤石结构的CeO2,与商用纳米CeO2相比,粒径较小,比表面积较大,达到106．5 m2?g－1；掺杂 CuO的CuO-CeO2复合材料的催化活性较高,在催化NH3还原NO 时,当温度为280℃时NO 的转化率就超过了94％,远高于商用块状CeO2和纳米CeO2的.
The lens wiping paper fiber as a template was dipped in the solution of cerium nitrate and copper nitrate,and then was calcined to obtain the CuO-CeO2 composite.The micromorphology and phase composition of the composite were studied and the surface property and catalysis reduction denitrification performance were also analyzed and compared with those of commercial nano-CeO2 and bulk CeO2 .The results show that the CuO-CeO2 composite was long-tube-like with a tube diameter of about 7μm.The grains of CuO and CeO2 had a uniform size of 5-8 nm and naturally accumulated,forming the voids with nano-size.The CeO2 with a cubic fluorite structure in the composite had a smaller grain size and an increased specific surface area of 106.5 m2??g-1 comparing to those of commercial nano-CeO2 .The catalytic activity of the CuO-CeO2 composite was relatively high on account of the doping of CuO.During catalytic reduction of NO by NH3 ,the conversation rate of NO by the composite achieved over 94% at 280 ℃,which was much higher than that of commercial bulk CeO2 and nano-CeO2 .
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