Potassium effect on the thermal stability and reactivity of NOx species adsorbed on Pt,Rh/La2O3 catalysts Original Research Article

In this paper we analyzed the effect of potassium on the thermal stability of NOx species adsorbed on lanthanum supported catalysts. Catalysts containing only noble metals (Pt and/or Rh) or noble metals and potassium were prepared. The soot combustion process in the presence of NOx species previously adsorbed on the catalysts has also been studied in order to evaluate the possibility of using these materials for the simultaneous abatement of soot and nitrogen oxides.