中文摘要：

采用柠檬酸络合法制备了一系列La0.8Cu0.2Ni1-xMxO3（M分别为Mn、Fe和Co）钙钛矿复合氧化物．催化性能的测定结果表明：750℃焙烧制得的催化剂La0.8Cu0.2Ni1-xMxO3显示出良好的三效催化性能，能使贫燃条件下CO、NO和C3H6的起燃温度较低，分别为165℃、295℃和302℃，当温度高于400℃时完全转化．扫描电子显微镜（SEM）和X射线衍射（XRD）的测试分析结果表明：La0.8Cu0.2Ni1-xMxO3因具有良好的钙钛矿晶型结构，且为纳米级晶体，所以三效催化性能良好．

英文摘要：

A series of La0.8Cu0.2Ni1-xMxO3（M = Mn, Fe, Co） perovskite-type were synt.hesized using citric acid sol-gel method. It is showed that La0.8Cu0.2Ni1-xMxO3 exhibited high three-way catalytic performance when it at 750℃. At lean-burn conditions, the light temperature of CO, C3H6 and mixed oxides the catalyst was calcined NO were 165 ℃, 302 ℃ and 295 ℃, respectively, the three gas could be completely converted above 400 ℃. The structure of the catalyst was analyzed preliminarily by means of X-ray diffraetion（XRD） and scanning electron microscopy（SEM ）. It is presented that they all were nanocrystal, so it exhibited good three-way catalytic performance.