The selective catalytic reduction of nitric oxide by propylene over Pt/SiO2

A novel continuous reactor for catalytic reduction of NOx—fixed bed simulations

“…This mechanism appears to agree with many experimental findings that the presence of small amount of O 2 (e.g. <2%) is essential for HC-SCR (Lee et al, 1997;Captain et al, 1998;Shi et al, 2002), as shown in Figure 1. In parallel, the presence of O 2 will oxidize hydrocarbons, leading to lower selectivity of hydrocarbons toward NO x reduction.…”

NOX storage and reduction on a Pt/BaO/alumina monolithic storage catalyst

“…The NO X conversion drops sharply with further increases in temperature. This is attributed to the combined effect of oxygen inhibition of NO adsorption and dissociation and enhanced NO desorption at higher temperatures [25,26]. The high NO X conversion under rich conditions using propylene as a reductant has been reported by others [19,27].…”

NOx adsorption and reduction with C3H6 over Fe/zeolite catalysts: Effect of catalyst support

“…The coefficient β of Fe/MOR is smaller than that of other catalysts, corresponding to a stronger adsorption of NO on Fe/MOR. 8 3. 10 the surface area and pore volume of Fe/MOR was larger than those of Fe/ZSM-5 and Fe/FER.…”

“…As a key component of flue gases at lean burn conditions, excess O 2 inhibits the activity and selectivity of most catalysts in the HC-SCR process [5][6][7]. On the other hand, according to one of the reaction mechanisms in which NO first needs to be oxidized to NO 2 prior to reduction, a small amount of O 2 is necessary for NO x reduction [8][9][10].…”