Role of water on ozonation of cinnamaldehyde to benzaldehyde under Ca(OH)2 catalysis: A combined in situ DRIFTS and DFT study

The Mars–Van Krevelen cycle and non-noble metal Ni jointly promoting Z-scheme charge transfer: a study on the photothermal synergy effect applied in selectively oxidizing aromatic alcohols

“…45 These peaks gradually intensify over time, indicating the effective adsorption of benzyl alcohol on the catalyst surface. Furthermore, the peaks at 1668 cm −1 and 1708 cm −1 emerge and gradually increase, signifying the asymmetric stretching of CO 46 in benzaldehyde. Interestingly, no characteristic peaks associated with carboxylic acid are observed in the spectrum, providing evidence that the primary product of this reaction is benzaldehyde, confirming its high selectivity.…”

Efficient treatment of salty organic wastewater by α‐MnO2‐N/C synergistic catalytic ozonation: Effect and mechanism

“…The MnO 2 /AC and α‐MnO 2 ‐N/C@AC catalysts show significant surface hydroxyl characteristic peaks near 1615 and 3500 cm −1 (Figures 9 and 10), which is mainly due to the metal activity components on the surface of the catalyst adsorbed water molecules to form Mn‐OH sites, which is Lewis acid sites 52 . It has a strong affinity to ozone and is beneficial to its efficient decomposition and transformation.…”

“…(Figures 9 and 10), which is mainly due to the metal activity components on the surface of the catalyst adsorbed water molecules to form Mn-OH sites, which is Lewis acid sites. 52 It has a strong affinity to ozone and is beneficial to its efficient decomposition and transformation. Meanwhile, there is no obvious characteristic peak of ozone adsorption on the surfaces of MnO 2 /AC and α-MnO 2 -N/C@AC catalysts in the absence of water molecules, which verifies that the metal stronger adsorption capacity of organic pollutants than AC support, which is beneficial to the heterogeneous ozone catalytic oxidation process.…”

Pt anchored in the skeleton of rice husk-based ZSM-5 for excellent catalytic VOC oxidation: structure–activity relationship and environmental impact assessment

“…Absorption peaks at around 2739, 1628 and 1561 cm −1 are probably because of the stretching vibrations of the O-H group in benzaldehyde, which is formed by the double-bond cleavage oxidation of C 7 H 8 . 51,52 In addition, two closely connected peaks at 1942 and 1837 cm −1 are attributed to the symmetric and asymmetric CvO stretching vibrations of maleic anhydride, implying that toluene reacts with the active catalyst with stable aromatic ring breaking. 53 The adsorption bands at 1204, 1341 and 1047 cm −1 are assigned to benzoate species and benzyl alcohol, respectively.…”