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GRAPHICAL ABSTRACT
Abstract
A mesoporous crystalline material (MCM-41)-supported mercapto and vinyl platinum complex [MCM-41-(SH-Pt)-(Vi-Pt)] was prepared and characterized by Fourier Transform-Infrared spectroscopy, thermogravimetry, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The catalytic activity of MCM-41-(SH-Pt)-(Vi-Pt) was evaluated through the hydrosilylation of styrene with methyldiethoxysilane. MCM-41-(SH-Pt)-(Vi-Pt) shows superior activity for hydrosilylation compared with MCM-41-Vi-Pt and MCM-41-SH-Pt respectively, but the selectivity of three catalysts is almost the same. The catalyst MCM-41-(SH-Pt)-(Vi-Pt) could efficiently be recovered by a simple filtration and reused in four consecutive cycles without significant loss of catalytic activity and selectivity.