La0.8Ba0.2Ni0.6M0.4O3系列钙钛矿型复合氧化物的制备与三效催化性能
Preparation and three-way catalytic performance of La0.8Ba0.2Ni0.6M0.4O3 perovskite-type mixed oxides
采用柠檬酸溶胶凝胶法制备了一系列La0.8Ba0.2Ni0.6M0.4O3 (M=Co，Mn，Cu，Al，Fe)钙钛矿型复合氧化物，借助扫描电子显微镜（SEM）、X-射线衍射（XRD）等分析方法研究了该系列催化剂活性与结构的关系。实验结果表明，经750 ℃焙烧制得的复合氧化物La0.8Ba0.2Ni0.6Co0.4O3具有良好的三效催化性能，NO、CO和C3H6的起燃温度都较低，分别为300 ℃、198 ℃和325 ℃；在贫燃条件下，NO、CO和C3H6的转化率分别高达99.1 %、98.5 %和90.4 %。
series of La0.8Ba0.2Ni0.6M0.4O3 (M=Co，Mn，Cu，Al，Fe) perovskite-type mixed oxides were prepared by the citric acid sol-gel method. The relationship between the catalytic activity and the structure of catalyst was explored by using the X-ray diffraction (XRD) and scanning electron microscopy (SEM).The results show that the catalyst exhibited the high cataltic activity. The light-off temperature for NO,CO, and C3H6 were 300 ℃,198 ℃, and 325 ℃. The conversion efficiency for NO, CO, and C3H6 were 99.1%, 98.5 % and 90.4 % respectively under lean-fuel conditions.
陈耀文、郭锡坤、史作辉
化学无机化学工业金属元素无机化合物化学工业
溶胶-凝胶法三效催化剂LaNiO3钡钴
sol-gel methodthree-way catalystlaNiO3bariumcobalt
陈耀文,郭锡坤,史作辉.La0.8Ba0.2Ni0.6M0.4O3系列钙钛矿型复合氧化物的制备与三效催化性能[EB/OL].(2009-12-31)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/200912-1250.点此复制
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