Effect of loading sequence between Cu and Fe on SCR-C3H6 performance for Al-PILC based bimetallic catalysts

Abstract To investigate the effect of impregnation sequence on SCR-C 3 H 6 performance, Al-PILC based catalysts with different sequences between Cu and Fe were prepared. Activity result showed that influenced where, NO conversion followed order from high to low: Cu-Fe/Al-PILC>FeCu/Al-PILC>CuFe/Al-PILC. XRD results indicated dispersion active phase was related sequence. The specific surface area not crucial factor affecting activity. UV-Vis demonstrated isolated 2+ 3+ contributed activity rather than CuO 2 O particles, more existed Cu-Fe/Al-PILC. -TPR XPS revealed superior reduction ability adsorbed oxygen led excellent performance for Cu-Fe/Al-PILC catalyst.