La_(2-x)Ba_xCoO_4(x≤0.8)系列氧化物催化NO直接分解的性能

Catalytic performance of the La_(2-x)Ba_xCoO_4( x≤0. 8)oxides for NO direct decomposition

采用爆炸法合成了La2-xBaxCo O4(x≤0.8)系列催化剂,通过XRD、FT-IR等分析方法表征了其物相组成,并考察了该系列催化剂催化分解NO的性能。结果表明:Ba的掺入可以改变催化剂的物相组成,从而影响其催化性能。Ba掺杂的Co基钙钛矿型复合氧化催化NO直接的性能优于其类钙钛矿型复合氧化物的催化性能。

The oxides,La2-xBaxCoO4（x≤0. 8）were prepared by citrate combustion method. The samples were analyzed by XRD and FT-IR. Meanwhile,their catalytic performance for NO direct decomposition was also investigated. The results demonstrated that the addition of Ba could influence the composition of the oxides,which resulted in the change of the cata-lytic performance. It was found that the activity of Co-base perovskite oxides with the doping of Ba was better than that of Co-base perovskite-like oxides.