Lean NOx Reduction by NH3 on Fe-Exchanged Zeolite and Layered Fe/Cu Zeolite Catalysts: Mechanisms, Kinetics, and Transport Effects

Rising transportation fuel costs have increased the use of diesel-powered vehicles, which are more fuel efficient than their gasoline counterparts. But the lean diesel exhaust contains NOx (NO + NO2) which is notoriously difficult to reduce in the presence of excess O2. Selective catalytic reduction (SCR) of NOx with NH3 generated