A magnetically recyclable superparamagnetic silica supported Pt nanocatalyst through a multi-carboxyl linker: synthesis, characterization, and applications in alkene hydrosilylation.

ABSTRACT: To simplify separation procedures, improve the reusability and decrease the loss of Pt, two Pt catalysts anchored on superparamagnetic silica (Fe₃O₄@SiO₂-EDTA@Pt and Fe₃O₄@SiO₂-DTPA@Pt) were prepared for the first time. The stable magnetic properties made them easily recyclable using a magnet rather than filtration, decantation or centrifugation. After 12 catalytic runs for both 30-50 nm Pt catalysts, the yield of 1-heptylmethyldichlorosilane was still up to 90%. The average loss of Pt in each reaction was only 0.87% for Fe₃O₄@SiO₂-EDTA@Pt and 0.66% for Fe₃O₄@SiO₂-DTPA@Pt owing to the strong interaction between Pt and carboxyl. The unprecedented activity and s

SUBMITTER: Li L 

PROVIDER: S-EPMC9063652 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature