Application Note # 06 氧化钡的氮氧化合物存储动力学

NOx storage/release catalysts, in which NOx is temporarily accumulated in the catalyst before being reduced to N2, play a key role in automotive emission cleaning. They rely on an active material, for example barium oxide (BaO), which upon NOx storage is converted to Ba(NO3)2 or related compounds. Pt (and in practice usu?ally also Rh) is needed for the reduc?tion step and also for oxidation of NO (when present) to NO2 during the storage phase.