La_(1-x)M_xCoO_3催化剂上C_3H_6选择性催化还原NO反应的研究

SELECTIVE CATALYTIC REDUCTION OF NO WITH C_3H_6 OVER La_(1-x)M_xCoO_3 CATALYSTS

研究了用共沉淀法和柠檬酸络合法制备的钙钛石型复合氧化物La1-xMxCo)3（M=Ag、Ce）催化剂上过量氧存在下丙烯选择催化还原NO的反应性能，发现柠檬酸络合法制备的La1-xCexCoO3催化剂具有较高的反应活性，且催化活性随着Ce含量的不同而明显变化，配比为La0.8Ce0.2C0O3的催化剂在现出最佳的反庄活性。

The selective catalytic reduction of nitrogen monooxide with propene in the presence of oxygen was studied over the catalysts of La1-x MxCoO3 (M=Ag,Ce) prepared by different methods. It was found that La1-xCexCoO3 prepared by citric acid coordination method exhibited a good catalytic property, and the activities were changed obviously with the amount of cerium. Among the samples tested, La0.8 Ce0.2 CoO3 showed the highest catalytic activity.