Selective NO reduction by propane over commercial oxide catalysts and their mechanical mixture: I. Synergistic effect

The H2 role in the synergistic phenomenon in selective NO x reduction by propane over a mechanical mixture of oxide catalysts

“…It is likely that the synergistic phenomenon is rather common [7], but no unified mechanism for it is proposed so far, although there is a sufficient amount of works dedicated to deNO x mechanism over three-way catalytic systems [8][9][10]. Earlier [11,12] we have determined on the basis of kinetics and thermal desorption measurements, the experimental conditions under which synergism is observed in the reaction of selective reduction of nitrogen oxides by propane over the mechanical mixture of commercial NTK and Ni-Croxide catalysts. In this work, we used the spectrokinetic method for elucidating the role of surface complexes formed in the course of NO interaction with C 3 H 8 and O 2 over the commercial NTK and Ni-Cr-oxide catalysts, the components of the mechanical mixture.…”