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Direct synthesis of silicon compounds from metallic silicon

Research Project

Project/Area Number 11450304
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 触媒・化学プロセス
Research InstitutionTokyo Institute of Technology

Principal Investigator

SUZUKI Eiichi  Tokyo Institute of Technology Graduate School of Science and Engineering Associate Professor, 大学院・理工学研究科, 助教授 (90183417)

Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2000: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsmetallic silicon / direct synthesis / silicon compounds / silylene
Research Abstract

Based on the reaction mechanism proposed by the head investigator and coworkers for the direct synthesis of trimethoxysilane from metallic silicon and methanol using copper (I) chloride as the catalyst, the reaction of metallic silicon with hydrogen chloride was carried out. When this reaction was conducted in the presence of propene, organosilicon compounds were formed. By examining the reaction factors such as amount of catalyst, reaction temperature, and molar ratio of propene to hydrogen chloride, optimum reaction conditions were obtained.
For example, physical mixture of metallic silicon and copper (I) chloride powders (Cu= 5wt.%) was loaded in a fixed-bed flow reactor operating under the atmospheric pressure, and was heat-treated at 723 K for 10 min in a helium stream. Then, hydrogen chloride (10 mmol h^<-1>) and propene (5 mmol h^<-1>) were fed to the reactcr. The reaction for 5 h gave isopropyldichlorosilane and propyldichlorosilane with selectivity of 13 and 3%, respectively, the conversion of metallic silicon being 87%. Other silicon-containing compounds were trichlorosilane, dichlorosilane, and tetrachlorosilane.
Just as same as the direct synthesis of trimethoxysilane from metallic silicon and methanol, the reaction proceeds via surface silylene formed on the silicon surface : silylene reacts with propene to finally form organosilicon ccmpounds

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Masaki Okamoto: "Direct synthesis of Organodichlorosilanes by the reaction of metallic silicon. Hydrogen chloride and alkene/alkye"Journal of Chemical Society, Dalton Transaction. 71-78 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Masaki Okamoto: "Direct synthesis of alkyldialkoxysilanes by the reaction of silicon, alcohol and alkene using high-pressure reactor"Journal of Organometallic Chemistry. 619. 235-240 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Okamoto, S.Onodera, Y.Yamamoto, E.Suzuki, and Y.Ono: "Direct Synthesis of Organodichlorosilanes by the Reaction of Metallic Silicon, Hydrogen Chloride and Alkene/Alkyne and by the Reaction of Metallic Silicon and Alkyl Chloride"J.Chem.Soc.Dalton Trans.. 71-78 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Okamoto, J.Komai, M.Uematsu, E.Suzuki, Y.Ono: "Direct Synthesis of Alkyldialkoxysilanes by the Reaction of Silicon, Alcohol and Alkene Using a High-pressure Flow Reactor"J.Organomet.Chem.. 619. 235-240 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary

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Published: 2000-04-01   Modified: 2016-04-21  

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