Nickel oxide supported on zirconium-doped mesoporous silica for selective catalytic reduction of NO with NH₃

Highly porous graphitic carbon and Ni2P2O7for a high performance aqueous hybrid supercapacitor

“…Along with this two satellite peaks, at 861.7 and 879.8 eV, were also observed. 48 The O1s spectra ( Fig S7d) confirms the presence of metal oxide (M-O; 532.6 eV). 49 However, the peaks observed at 133.5 and 135.8 eV in high resolution spectrum of P 2p (Fig S7e) is assigned to P 2p 3/2 and P 2p 1/2 .…”

Synthesis, characterization and catalytic activity of highly ordered hexagonal and cubic composite monoliths

“…However, this shift was slightly decreased to 1.6 eV (Fig. 3b) at high loading amounts of NiO, indicating the formation of octahedral Ni(II) ions with large particles of NiO, which could be partially loaded in the outer frameworks of HOM mesoporous silica [43]. Particularly important here were the two peaks of satellite structures at 862.5 and 867 eV, respectively.…”

“…Although, the binding energy of Ni 2p 3/2 peak was shifted around 2.0 eV to higher values compared to that of pure NiO (854.4 eV) with higher proportions of Ni(II) ions in the oxidic form than in the spinel form, the splitting separation between these two main peaks, namely, 17.9 eV, indicated the welldefined symmetry of Ni(II) ions in the oxide form [42]. This blue shift in the 2p 3/2 peak could be assigned to the existence of the small particles of NiO inside the HOM mesopores [43]. However, this shift was slightly decreased to 1.6 eV (Fig.…”

“…The finding indicated the absence of any oxygen-related compounds onto the HOM surfaces such as H 2 O or OH groups that led to formation of higher binding-energy satellite peaks. The signal core level did not depend on neighboring coordination due to the full band of the O 2− (2p 6 ) in well-dispersion NiO onto HOM surfaces [43,44]. The FTIR spectra (Fig.…”

Bauxite-supported Transition Metal Oxides: Promising Low-temperature and SO2-tolerant Catalysts for Selective Catalytic Reduction of NOx

“…It is noteworthy that a strong desorption peak of NO 2 is also observed in bauxite, suggesting that bauxite is able to oxidize NO, which would be beneficial for SCR at low temperature 1213. The addition of Cu and Ni results in the increment of desorption temperature below 200 °C to 183 and 188 °C, respectively, while the desorption temperature of NO x in Mn/bauxite is decreased to 90 °C owing to weak interaction of NO x with small MnO 2 /Mn 2 O 3 particles 27. Interestingly, the peak intensity in M/bauxite is greatly increased in comparison with that of bauxite, suggesting that Mn, Ni and Cu addition is favorable for NO x adsorption at low temperature.…”