采用水热法制备铜铝水滑石作为前体，经500℃焙烧得到Cu-Al复合氧化物，并利用X射线衍射、红外光谱对其进行表征；将Cu-Al复合氧化物负载于直径为3~5 mm球状Al₂O₃载体上，进行NO吸附和热稳定性试验。结果表明，NO、O₂、H₂O（g）在Cu-Al复合氧化物作用下在氧化物表面生成HNO₃，并与Cu-Al复合氧化物中的CuO组分反应生成Cu（NO₃）₂，吸附率可达28%，再高温焙烧可以释放以NO为主体的氮氧化物，并且可以恢复到之前的金属氧化物结构。而吸附完成的化合物静置数天后会回到原来的水滑石层状结构。

Copper-aluminum hydrotalcite is made via hydrothermal method,then is roasted at 500℃ to prepare Cu-Al complex oxides that is characterized by X-ray diffraction and infrared-red spectrum.The prepared Cu-Al composite oxide is loaded onto the surface of spherical Al₂O₃ carrier with a diameter between 3 mm and 5 mm,and the sample is evaluated in the experiments about NO adsorption and heat endurance.The experimental results show that NO,O₂ and water steam forms HNO₃ on the surface of Cu-Al complex oxides,then HNO₃ reacts with CuO in Cu-Al composite oxides to form Cu(NO₃)₂,and the adsorption efficiency can reach 28%.NO_x,with NO as the main body,can be released when the product is roasted at a high temperature,and the structure of the former metal oxides can be restored.The adsorbed compounds will return to the original hydrotalcite-like layered structure after a few days of static storage.

拜文磊(1994-),男,硕士研究生,研究方向为尾气处理,424084694@qq.com