Electrostatic self-assembly of composite materials containing Keggin structure polyoxoanions and functionalized Anderson structure polyoxometallic cations

Molybdenum anchored on NH2‐modified spherical SiO2: A highly efficient and stable catalyst for oxidative desulfurization of fuel oil

“…Due to the presence of Si─O─Si band at 1093 cm −1 generated from the abundant Si─OH groups on the surface of SiO 2 and the triethoxy groups in KH550, the typical vibrations of N─H and C─H were not obvious in the spectrum . The characteristic bands of Keggin type appeared at 1061, 960, 867 and 782 cm −1 . For the Mo‐NH 2 ‐SiO 2 catalyst, the bands at 1097 and 799 cm −1 are masked by the bands of SiO 2 , and the characteristic bands of H 3 PO 4 ⋅12MoO 3 cannot be obviously observed.…”