类钙钛矿型复合氧化物La2NiO4的制备和性能研究

Preparation and properties of La_2NiO_4 perovskite-like oxides

采用共沉淀法、硝酸盐分解法、溶胶-凝胶法3种不同的方法制备了纳米级的类钙钛矿型复合氧化物La2NiO4;采用XRD、SEM、BET等实验技术对催化剂进行了表征,并且考察了该催化剂对CH4/CO2重整反应的催化活性。实验结果发现,不同方法制备的催化剂在粒子大小、比表面积、催化活性等方面存在差异,其中溶胶-凝胶法制备的催化剂表现较好。

In this paper, three different methods, such as co-precipitation, nitrate decomposition and solgel have been used for preparation of nano-sized La2NiO4. The catalysts were investigated by XRD,SEM and BET. The result showed that different prepared methods had different particle size, surface area and catalytic activity. The sample prepared by sol-gel method showed good catalytic activity .