A series of model NO_x storage-reduction (NSR) catalysts with different Rh/Pt weight ratios were prepared independently by wet impregnation and then mechanically mixed to investigate the effect of the Rh/Pt weight ratio on the overall NO_x removal efficiency and nitrogen yield. XRD, EDS and H₂-TPR studies indicated the coexistence of BaCO₃, MnO_x and BaMnO₃ phases in the catalysts. Increasing Rh/Pt weight ratio enhanced NO_x reduction under the rich phase, and improved overall N₂-yield in the kinetic regime of NO conversion, but shows a negative effect in the equilibrium-limited regime above 400 °C.

中文翻译：

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Rh / CeO ₂ + Pt / Ba / Mn / Al ₂ O ₃型NSR催化剂：Rh / Pt重量比的影响

一系列模型NO的_X储存还原（NSR）以不同的Rh /铂的重量比催化剂通过湿浸渍独立地制备，然后机械混合以调查对整体NO上的Rh /铂的重量比的效果_X除去效率和氮屈服。XRD，EDS和H ₂ -TPR研究表明，催化剂中BaCO ₃，MnO _x和BaMnO ₃相共存。增加的Rh /铂的重量比增强NO _X浓阶段下还原，和整体改善Ñ ₂中NO转化的动力学机制-yield，但示出了在400℃以上的平衡限制状态产生负面影响。