CAJ | 학술논문

采用溶胶－凝胶法制备了一系列钙钛矿复合氧化物La_0.8M_0.2Fe_l-xCuO3 （M为Sr、Ba和Ce）．催化性能测定结果发现，800℃焙烧所制得的La_0.8M_0.2Fe_l-xCuO3 具有良好的三效催化性能，在该催化剂上C3H6、、CO和NO的起燃温度较低，分别为225℃、200℃和280℃，并且在温度达到325℃之前都能得到完全转化．扫描电子显微镜和x射线衍射测试分析表明，La_0.8M_0.2Fe_l-xCuO3 具有良好的钙钛矿型晶体结构，品粒为纳米级，团聚不严重，这可能是其三效催化性能良好的主要因素．
채용용효－응효법제비료일계렬개태광복합양화물La_0.8M_0.2Fe_l-xCuO3 （M위Sr、Ba화Ce）．최화성능측정결과발현，800℃배소소제득적La_0.8M_0.2Fe_l-xCuO3 구유량호적삼효최화성능，재해최화제상C3H6、、CO화NO적기연온도교저，분별위225℃、200℃화280℃，병차재온도체도325℃지전도능득도완전전화．소묘전자현미경화x사선연사측시분석표명，La_0.8M_0.2Fe_l-xCuO3 구유량호적개태광형정체결구，품립위납미급，단취불엄중，저가능시기삼효최화성능량호적주요인소．
A series of La_0.8M_0.2Fe_l-xCuO3 （M = Sr,Ba,Ce） perovskite-type mixed oxides were synthesized using sol-gel method. The results of the catalytic property measurement showed that the perovskite-type mixed oxide La_0.8M_0.2Fe_l-xCuO3 catalyst exhibited high three-way catalytic performance when it was calcined at 800 ℃. Under the function of the catalyst, the light tempratures of C3H6, CO and NO were 165 ℃, 302 ℃ and 295 ℃ respectively, the three kinds of gas could be completely converted when in 325 ℃. The structure of the catalyst was analyzed preliminarily by means of X-ray diffraction（XRD） and scanning electron microscopy（SEM）. The results presented that the La_0.8M_0.2Fe_l-xCuO3 catalyst had good perovskite-type crystal structure, and its grain was nanocrystal, and this was the main reason why it exhibited good three-way catalytic property.