Deoligomerization of cyclooligosiloxanes with dimethyl carbonate over solid-base catalysts

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

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

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
Volume88
Issue number3-4
DOIs
Publication statusPublished - 2003 Jun 1
Externally publishedYes

Fingerprint

Carbonates
Monomers
Catalysts
Aluminum Oxide
Silicones
Methanol
Potassium
Recycling
Alumina
Vapors
methyl carbonate
octamethylcyclotetrasiloxane
hexamethylcyclotrisiloxane
decamethylcyclopentasiloxane
potassium fluoride

Keywords

  • Deoligomerization
  • Dimethyl carbonate
  • Polysiloxane
  • Recycling
  • Silicone

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Deoligomerization of cyclooligosiloxanes with dimethyl carbonate over solid-base catalysts. / Okamoto, Masaki; Miyazaki, Kuon; Kado, Akihiro; Suzuki, Sumiko; Suzuki, Eiichi.

In: Catalysis Letters, Vol. 88, No. 3-4, 01.06.2003, p. 115-118.

Research output: Contribution to journalArticle

Okamoto, Masaki ; Miyazaki, Kuon ; Kado, Akihiro ; Suzuki, Sumiko ; Suzuki, Eiichi. / Deoligomerization of cyclooligosiloxanes with dimethyl carbonate over solid-base catalysts. In: Catalysis Letters. 2003 ; Vol. 88, No. 3-4. pp. 115-118.
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