CeVO4 promotes the formation of Brønsted acid sites while VOx and CeO2 provide Lewis acid sites on the surface. In addition, the Lewis acid sites may be converted to the Brønsted acid sites at high temperature SCR reactions. However, Ce is prone to generate Ce2(SO4)3 with sulfate ...
Further computational studies are needed to understand at atomic level how the indium- and zinc-oxide structures influence the quality of the interface. At the same time, the investigation of different SnO2:In2O3 ratio in ETL precursor solutions could lead to further improvements of the ...
The higher NOx conversion can be assigned to more active Lewis acid sites, the weakly adsorbed NO2, and the monodentate nitrate. Meiqing et al. [28] systematically investigated Ce-modified V2O5–WO3/TiO2 (V/WTi) catalysts by the deposition–precipitation method (V/Ce/WTi-DP and Ce/WTi-DP...
The active Fe species, rather than acidity, played a decisive role in the SCR activity of Fe-ZSM-5, and the Fe-oxo-related Lewis sites were important for the low-temperature SCR reaction. Compared to the dimeric [OH-Fe-O-Fe-OH]2+, the isolated Fe3+ species in Fe-ZSM-5 were shown...
In an investigation, Zhang and co-workers demonstrated that NMP as a solvent additive (when added in DMF) resulted in a high quality of perovskite film due to the Lewis acid–base reaction with Pb atom. The study revealed that intermediates obtained with different PbI2/NMP ratios are of the...