Deoligomerization of cyclooligosiloxanes with dimethyl carbonate over solid-base catalysts

Masaki Okamoto, Kuon Miyazaki, Akihiro Kado, Sumiko Suzuki, Eiichi Suzuki

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Cyclooligosiloxanes, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane were efficiently deoligomerized with dimethyl carbonate using an alumina-supported potassium fluoride catalyst under a continuous vapor-phase flow condition to form dimethoxydimethylsilane monomer. In the deoligomerization of larger cyclooligosiloxanes, the catalyst was deactivated. The addition of a small amount of methanol suppressed the deactivation. These results strongly suggest a new method for recycling silicone via monomers.

Original languageEnglish
Pages (from-to)115-118
Number of pages4
JournalCatalysis Letters
Issue number3-4
Publication statusPublished - 2003 Jun
Externally publishedYes


  • Deoligomerization
  • Dimethyl carbonate
  • Polysiloxane
  • Recycling
  • Silicone

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


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