Catalyst for synthesizing 3-chloropropyl triethoxysilane and preparation method and application thereof

Abstract

This invention belongs to the field of 3-chloropropyltriethoxysilane preparation, specifically disclosing a catalyst for the synthesis of 3-chloropropyltriethoxysilane, its preparation method, and its application. The preparation method is as follows: S1: Dissolve the precursor salt of the co-catalyst in deionized water, add KIT-6 support, stir and impregnate at room temperature for a certain time, filter, dry, and then calcine to obtain a support modified with the co-catalyst; S2: Put the support modified with the co-catalyst into a chloroplatinic acid aqueous solution, impregnate at room temperature for a certain time, filter, dry, and then calcine to obtain a catalyst precursor; S3: Place the catalyst precursor in a quartz tube furnace and reduce it under a hydrogen-argon mixed atmosphere to obtain a supported platinum catalyst. This catalyst can be reused multiple times and can be used as a catalyst for the hydrosilylation reaction of 3-chloropropene and triethoxysilane to synthesize 3-chloropropyltriethoxysilane, achieving mild reaction conditions and high yield of 3-chloropropyltriethoxysilane.