H. Raisanen et al., METAL LAYERED ZEOLITE CATALYSTS FOR NOX ABATEMENT IN LEAN EXHAUST-GASCONDITIONS, Reaction kinetics and catalysis letters, 60(2), 1997, pp. 297-302
Metal layered ZSM-5 zeolites ion-exchanged with copper are effective c
atalysts in NOx abatement in lean automotive exhaust gas conditions. T
he effective ion-exchange level of Cu is above 100%, and some co-catio
ns improve the catalytic activity. The thermal stability of the cataly
st can be improved with Cr as a co-cation.