Reaction pathways of propane and propene conversion in the presence of NO and O2 on Cu/MFI

Reduction of NO by propene over supported iridium catalysts under lean-burn conditions: an in situ FTIR study

“…Different mechanisms have been proposed in the literature for the SCR of NO by propene. Consecutive steps with organo nitro or nitrite species, RONO 2 , RONO such as C 3 H 7 -ONO (1662 cm −1 ), have been considered [44][45][46][47][48]. Adsorbed nitrate and acetate have been detected by Shimizu et al [41,49] on Al 2 O 3 , in a flow of (C 3 H 6 -O 2 ) and during NO-C 3 H 6 SCR.…”

IR studies of the transformations of nitrogen-containing organic intermediates during selective reduction of nitrogen oxides by hydrocarbons

“…However, contrary to Ref. [15,16], in our schemes, there is no interaction between two C,N-containing intermediates, since it could hardly happen due to the low surface coverage under real steady-state conditions. …”

“…6. For CI-I4 -SCR, according to the kinetic isotope effects [13,14], the C-H bond rupture stage is rate-limiting Nitrile hydrolysis step was also earlier suggested by Centi et al [15]. However, contrary to Ref.…”

Effect of Low Concentration of SO x on NO Reduction with Propene Over Ag/Al2O3

“…It has been reported that acidic H-ZSN-5 showed good performance for SCR of NO [33]. Meanwhile, it has been suggested that the carbonaceous species, generated from activation of propene by protons, is capable of reacting with nitrate species to produce nitro-organic intermediates in NO reduction on Cu/MFI [34]. Therefore, we believe that the higher activity of the sulfated Ag/Al 2 O 3 catalyst is related to increase Bronsted acidic sites, which enhanced activation of hydrocarbons or adsorption of their products.…”