摘要
纳米晶ＬａＭｎＯ３及Ｌａ１－ｘＳｒｘＭｎＯ３的合成及其催化氧化性能刘源秦永宁（天津大学化工系，天津３０００７２）韩森（天津大学化工系一碳化工国家重点实验室，天津３０００７２）关键词纳米晶，钙钛矿型复合氧化物，一氧化碳，催化氧化，超临界干燥分类号Ｏ６４...
A novel method for synthesizing nanometer perovskite LaMnO_3 and La_[1-x]Sr_xMnO_3 was developed, in which solution of Na_2CO_3NaOH was taken as precipitating agent and the supercritical drying method was used. Nanometer crystalline LaMnO_3 and La_0.8Sr_0.2MnO_3 with the average particle size of about 18 nm and about 25 nm respectively were made by this method. It was shown that the activity for carbon monoxide oxidation on LaMnO_3 increases significantly with the decrease of its particle size and the substitution of strontium for lanthanum in nanometer LaMnO_3 can elevate the activity effectively.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1998年第2期173-176,共4页
关键词
纳米晶
一氧化碳
镧
氧化
锰
PTO
催化剂
Nanometer crystalline, Perovskite, Carbon monoxide, Catalytic oxidation, Supercritical drying
