Influence of Pd precursors on Pd/TiO2/Al2O3 catalysts for lean NOx reduction with CO and H-2

Abstract

The performances of selective catalytic reduction (SCR) by CO/H-2 over two Pd/TiO2/Al2O3 catalysts prepared from PdCl2 and Pd(NO3)(2) precursors were compared. The catalytic activities (NOx conversion and N-2 yield) were measured on these two catalysts. The catalytic properties of the prepared catalysts were studied by various characterization techniques such as BET, CO-chemisorption, TEM, XPS, and TPD. The Pd precursors influenced the Pd particle distribution, resulting in different catalytic activities.