Stéphanie Schneider

NOx reduction over CeO2–ZrO2 supported iridium catalyst in the presence of propanol

The 1-propanol assisted-reduction of NOx was investigated over Ir/Ce0.6Zr0.4O2. The catalytic performances of such a catalyst, the associated FTIR characterizations, and transient experiments suggest the formation of adsorbed R-NOx species as intermediates of the deNOx process; they provide the partially oxidized species required by the deNOx model.

Influence of Alumina-Supported M–Pt Catalysts in DeNOx Reactions with M = Pd or Ir or Ru

To better understand N2 formation in the selective catalytic reduction of NOx by propene under oxidative atmosphere, we studied the catalytic behavior of bimetallics. Surface segregation phenomena may provoke geometric and electronic modifications of the catalytic active sites. To explain our results we invoked: (i) the facile way to oxidize the bimetallic aggregates, (ii) the presence of atoms with low coordination number able to be oxidized first and (iii) an eventual formation of like “vic-diNOx species” on such bimetallics leading to N2 formation.