Bifunctional Pd/Fe-ZSM-5 catalysts promote pollutant degradation through in situ H 2 O synthesis.

The decomposition of N2O on dinuclear oxygen-bridged iron sites in Fe-ZSM-5 was simulated under steady-state conditions considering the reaction mechanism and the rate parameters proposed by Hansen et al. [J. Phys. Chem. C 111 (2007) 2092] on the basis of DFT calculations. The presence of low concentrations of water vapor in the feed stream (ppb to ppm levels) affects the calculated values for ...

Lanthanum modified Fe-ZSM-5 catalyst can both increase selective methane oxidation performance and decrease H 2 O consumption.

The interactions of water with H-ZSM-5, Cu-ZSM-5, and Co-ZSM-5 have been investigated by density functional theory (DFT). Calculations were also performed to determine the thermodynamics of metal removal from the zeolite. For all three forms of ZSM-5, water adsorbs by direct interaction of the O atom with the cation and hydrogen bonding of one of the two H atoms with an oxygen atom in the zeoli...

The catalytic activity of the binary composite catalysts Fe2O3-CoO/CaA and Fe2O3-CoO/ZSM-5 was studied. They were obtained by impregnation CaA ZSM-5 zeolites with aqueous solutions sulfates iron (FeSO4·7H2O) cobalt (CoSO4·7H2O). total metal content no more than 5%. Then, oxidizing burning at 720 °C for 60 min performed to produce oxides. It found that Fe-Co/CaA catalyst contains as CoFe2O4 comp...

The structure of copper sites in Cu-SSZ-13 during NH3-SCR was unravelled by a combination of novel operando X-ray spectroscopic techniques. Strong adsorption of NH3 on Cu, its reaction with weakly adsorbed NO from the gas phase, and slow re-oxidation of Cu(I) were proven. Thereby the SCR reaction mechanism is significantly different to that observed for Fe-ZSM-5.