An efficient method to synthesize chlorosilanes from hydrosilanes

• An efficient and productive method to synthesize chlorosilanes is reported.
• Factors that affect the reaction rate are investigated.
• The reaction rate constant, reaction order and the apparent activation energy are determined.
• The reaction was found to have an induction period.

An efficient, highly selective and productive synthesis of chlorosilanes from hydrosilanes is reported. Ceramic spheres were added to chlorination reaction systems and found to greatly increase the efficiency and yields of the reactions. PhSiH2Cl, PhSiHCl2, PhSiCl3, Ph2SiHCl, Ph2SiCl2, PhMeSiHCl and PhMeSiCl2 were synthesized from the corresponding hydrosilanes in only a few hours with yields that typically exceeded 90%. This is the first time PhSiCl3, Ph2SiHCl, Ph2SiCl2 and PhMeSiCl2 have been synthesized by this method. The factors that affect the rate of the chlorination reaction were studied. In addition the rate constant, reaction order and apparent activation energy of the chlorination reaction were also determined by kinetics study. The reaction was found to have an induction period.

An innovative synthesis of chlorosilanes from hydrosilanes is reported. Kinetics study of the chlorination reaction was investigated and the rate constant, reaction order and apparent activation energy of the chlorination reaction were determined.Figure optionsDownload as PowerPoint slide