SCR Of NOx by C3H6: Comparison Between Cu/Cr/Ceo2 And Cu/Ag/Ceo2

Abstract:

The influence of cocations (Cr and Ag) on the activity of Cu/CeO₂ catalysts in the selective reduction of NO_x with C₃H₆ has been investigated in this study. The reduction of NO_x under lean conditions was greatly improved by loading Cr and Ag onto a Cu/CeO₂ catalytic system. All the synthesized bimetal catalysts were characterized using XRD and TPR-H₂. The better metal–support interaction and metal dispersion shown by Cu/Ag/CeO₂ have elevated its performance compared to the Cu/Cr/CeO₂ catalyst. By having such salient features, the competitiveness factor (S_SCR-HC) assigned by Cu/Ag/CeO₂ was generally better than that of the other tested catalysts. The presence of O₂ was proven to be a very crucial factor for promoting the selective reduction of NO_x with C₃H₆.

1. Nor Aishah Saidina Amin, Tan Eng Fong and Z.A Manan (2004). SCR Of NO_x by C₃H₆: Comparison Between Cu/Cr/Ceo₂ And Cu/Ag/Ceo₂ Journal of Catalysis, 222, 100 – 106, Elsevier.