INFLUENCE OF OPERATING PROTOCOL IN THE TEMPERATURE-PROGRAMMED REACTION OF NO WITH DECANE ON CU MORDENITE/

A Cu/mordenite catalyst was prepared by ion exchange and characterized by N-2 sorption, XRD, TPR by H-2 and TPD by NO. The catalyst was eval uated in the selective catalytic reduction of NO by decane in O-2-rich atmosphere under temperature-programmed reaction from 293 to 773 K. T wo NO reduction profiles at 590 and 650 K occur under these conditions . By testing different operating protocols and different alkanes as re ductants, it was concluded that the low temperature peak (590 K) is du e to alkane condensed in the porosity of mordenite.