Oxidative coupling of aniline and desulfurization over nitrogen rich mesoporous carbon

Abstract

Tungsten loaded mesoporous nitrogen rich carbon materials were synthesized using SBA-15 as a hard template and these multifunctional materials ware successfully applied for oxidative coupling of aniline as well as desulfurization of dibenzothiophene.

Studies of synergy between metal–support interfaces and selective hydrogenation of HMF to DMF in water

“…5a). The two intense peaks at 284.5 and 285.4 eV binding energy may assigned to sp 3 hybridized graphite-like carbon and sp 2 hybridized diamond-like carbon, respectively [25,43], whereas two other peaks at 286.5 and 288.5 eV show the presence of surface oxygen functionalities such as CO, C@O. The peak at 289.8 eV may be assigned to CAN type structural units present in the catalyst.…”

Synthesis of AgWCNx Nanocomposites for the One‐Step Conversion of Cyclohexene to Adipic Acid and Its Mechanistic Studies

“…The C 1s spectra of the AgWCN x ‐1 catalyst can be further deconvoluted into five peaks (Figure c). The peaks at binding energies of 284.5 and 285.4 eV corresponds to sp 3 ‐hybridized graphite‐like carbon atoms and sp 2 ‐hybridized diamond‐like carbon atoms, respectively . Whereas the other two peaks at 286.5 and 288.5 eV indicate the presence of oxygen functionalities at the surface, such as CO or C=O groups.…”

“…However, the unit cell constant parameters calculated from the formula a 0 =2 d 100 /√ 3 show a very slight increase in the value with an increasing amount of silver and tungsten. A common wide‐angle reflection (Figure b) in the region of 25° could be attributed to the reflection from the (200) plane of carbon and a broadening of the peak is due to the amorphous nature of the materials . The wide‐angle XRD pattern shows no peak that can be attributed to tungsten oxide.…”

“…Figure a shows the small‐angle X‐ray scattering patterns of the mesoporous carbon materials with different ratios of silver and tungsten. All samples show a sharp peak at a low angle with two higher‐order peaks, which can be assigned to the (100), (110), and (200) planes of the hexagonal space group p 6 mm . The intensity of the peaks is less compared to the hard template AgW‐SiO 2 (Figure S1 in the Supporting Information).…”

“…Whereas the other two peaks at 286.5 and 288.5 eV indicate the presence of oxygen functionalities at the surface, such as CO or C=O groups. The N 1s spectrum was also deconvoluted into three peaks; the peaks at 398.9, 400.1, and 403.5 eV are related to the presence of N‐pyridine, N‐pyrrolic, and N‐quaternary structures of the AgWCN x ‐1catalyst, respectively …”