Super-microporous silica-supported platinum catalyst for highly regioselective hydrosilylation

Platinum(II) complexes bearing bulky Schiff base ligands anchored onto mesoporous SBA‐15 supports as efficient catalysts for hydrosilylation

“…This is in accordance with XPS analysis of O 1s, as the peak at 531.50 eV in the O 1s spectrum (supporting information, Figure S6) revealed the binding energy of O → Pt, which provided evidence of coordination between the platinum center and the ligand in the catalyst. [46,57,59] As expected, the microstructure of the SBA-15 solid support did not collapse after its successful modification with the platinum complex. To our surprise, it seemed that the stabilization of binary ligands prevented the platinum atoms from aggregating into large particles, and enabled them to form small nanoclusters with diameters of ca 1 nm instead (Figure 4c).…”

“…[46,57] According to ICP characterization results, the exact Pt content of SBA-15-Naphth-Pt(COD) was 8.69 wt%, which exceeded that found in most of the available heterogeneous Pt catalysts produced via the anchoring strategy.…”

Soluble Pt Nanoparticles Stabilized by a Tris‐imidazolium Tetrafluoroborate as Efficient and Recyclable Catalyst for the Stereoselective Hydrosilylation of Alkynes

“…The hydrosilylation of phenylacetylene has been performed with Pt nanoparticles in carbon nanoreactors, allowing for the evaluation of the effect of nanoscale confinement on the process selectivity . More recent articles include super‐microporous silica‐supported platinum NPs for hydrosilylation of alkenes and terminal alkynes, ligand‐free Pt 3 clusters very active with terminal alkynes, polysiloxane stabilized Pt NPs used for terminal and internal alkynes, and platinum nanoparticles dispersed in organically modified silicate matrices for addition of silanes to alkenes and a limited number of alkynes . In 2014 we have reported a pioneering work on the hydrosilylation of a range of internal alkynes catalyzed by soluble palladium nanoparticles stabilized by tris‐imidazolium salts which afforded the syn ‐addition products in a stereoselective manner.…”

Platinum on 2-aminoethanethiol functionalized MIL-101 as a catalyst for alkene hydrosilylation

“…Furthermore, the catalyst can be recycled seven times without signicant loss of activity. 25 However, currently most heterogeneous catalysis still have the disadvantages of low atomic utilization and leaching of active substances. 26 It is still challenging to develop a heterogeneous catalyst with a combination of the advantages of homogeneous and heterogeneous catalysts.…”