Abstract
The selective catalytic reduction of NO with C 2H 4 (C 2H 4-SCR) was investigated over perovskites containing Co, Mn, Fe, Cr, Al, Sn and Ti as host B-site cations. The C 2H 4-SCR activity was observed over Al-, Sn- and Ti-based oxides which were free from redox-active metal cations such as Co and Cu and innately poor in oxidation activity. Over perovskites containing redox-active metal cations, the undesirable consumption of C 2H 4 by O 2 proceeded preferentially.
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