Selective Reduction of No By C3 and C8 Alkanes Over Silver Catalysts on Structured Al2O3/Cordierite Supports

An extremal dependence of the catalytic activity of Ag/Al2O3/cordierite on the silver content in the selective catalytic reduction of NO with propane and octane was discovered. The optimum content of Ag was higher during reduction with octane (0.5 wt.%) than with propane (0.3 wt.%). The role of the silver involves formation not only of oxidation-reduction centers but also of additional Lewis acid centers at which activation of the reagents (NO and C (n) H (m) ) occurs.