Effect of SO2 on nitric oxide reduction over Ru-containing perovskite catalysts
Effect of SO2 on nitric oxide reduction over Ru-containing perovskite catalysts
复制标题
SO2 对含 Ru 钙钛矿催化剂还原一氧化氮的影响
DOI：
10.1016/0025-5408(74)90065-8
复制
发表时间：
1974
影响因子：
5.4
通讯作者：
L. E. Trimble
中科院分区：
文献类型：
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作者：
L. E. Trimble
钌金属是一种活性NO还原催化剂，但容易氧化为挥发性RuO4。用Ru取代的钙钛矿更稳定和经济。比较了钙钛矿La0.8K0.2Mn.94Ru.06O3和SrRuO3与Ru金属的SO2中毒（汽车尾气催化中的主要问题）。在所有三种催化剂上，在低于400°C下，SO2中毒显示出减少NH3的形成。总NO还原中毒较少，恢复更快的钙钛矿比Ru金属。
Ruthenium metal is an active NO reduction catalyst, but oxidizes easily to volatile RuO4. Perovskites substituted with Ru are more stable and economical. The perovskites La0.8K0.2Mn.94Ru.0603and SrRuO3are compared to Ru-metal with respect to SO2poisoning, a major problem in auto exhaust catalysis. SO2poisoning is shown to decrease NH3formation below 400°C over all three catalysts. Total NO reduction is poisoned less and recovers more quickly on the perovskites than on Ru metal.