CHARACTERIZATION OF HYDROTREATED Cu-ZSM-5 CATALYST FOR THE SELECTIVE CATALYTIC REDUCTION OF NO BY n-DECANE
Résumé
The steam treatment of Cu-ZSM-5 prepared by solid ion exchange involves an important decrease of the NO conversion. Characterization of the solids by NOTPD, H2-TPR, 27Al MAS NMR shows that the catalyst deactivation is mainly due to change in copper species rather than the collapse of the zeolite framework.