节点文献
钴系钙钛矿型氧化催化剂的抗硫性能研究
STUDIES ON THE SO2 RESISTANCE OF Co-CONTAINING PEROVSKITE TYPE OXIDATION CATALYSTS
【摘要】 <正> 具有钙钛矿(CaTiO3)型结构的复合氧化物分子式可写作ABO3,其中B是过渡元素离子,A是碱土或稀土等元素离子。这类化合物的特点是A和B位皆可容纳一种以上元素的离子而保持结构不变。A位离子被价态不同的另一种元素的离子部分置换(例如La3+被Sr2+部分置换),可引起B位元素离子价态的变化,使不常见的价态稳定(如
【Abstract】 SO2 resistance of several Co-containing perovskite type oxidation catalysts has been situdied.lt was found that their catalytic properties could be greatly affected by modifying their chemical composition. As the Sr2+ content in A site of the catalyst increased, their activity for CO oxidation,mobility of lattice oxygen and sulfur resistance increased as well. The best catalyst, La0.6Sr0.4Co0.8Me0.2O3, had high activity and SO2 resistance, and the poisoning was reversible.
- 【文献出处】 催化学报 ,Chinese Journal of Catalysis , 编辑部邮箱 ,1989年01期
- 【被引频次】28
- 【下载频次】117