Pt(0)-based catalyst supported on silica containing Di(ethylene oxide) units for hydrosilylation of unsaturated carbon-carbon bonds

The preparation of an active, air-stable, recoverable, and reusable Pt(O)-based catalyst supported on silica containing units was described for hydrosilylation of unsaturated carbon-carbon bonds. Elemental analysis of Si-PEO-Pt revealed that the platinum, silicon, and carbon contents in the black solid catalyst are 22.90, 14.14, and 33.92 wt %. The X-ray diffraction (XRD) pattern of Si-PEO-Pt within the range of 30-90° exhibits five pronounced diffraction peaks that are characteristic of crystalline Pt catalyst with a face centered cubic lattice. The TEM images of Si-PEO-Pt shows the formation of Pt(O) nanoparticles sized 3-4 nm, while hydrosilylation of a silicon compound catalyzed by the Pt(O) nanoparticles into Si-PEO-Pt led to terminally silylated product in high yield without any purification.