Synthesis of microporous inorganic-organic hybrids from layered octosilicate by silylation with 1,4-bis(trichloro- and dichloromethyl-silyl) benzenes

Dai Mochizuki, Sachiko Kowata, Kazuyuki Kuroda

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Abstract

Crystalline microporous inorganic-organic nanohybrids were synthesized by pillaring layered octosilicate with 1,4-bis(trichlorosilyl)benzene or 1,4-bis(dichloromethylsilyl)benzene. The silylating agents were preferentially bridged between the layers of octosilicate, resulting in the formation of microporous hybrids with BET surface areas of ∼500 m2/g. The trichlorosilyl or dichloromethylsilyl groups were regularly grafted with confronting two Si-OH groups on the same octosilicate surface, and each reacted group possessed one unreacted site (chloro or methyl group). The micropores derived from 1,4-bis(trichlorosilyl)benzene showed a hydrophilic nature due to remaining Si-OH groups after hydrolysis of chlorosilyl groups, whereas those derived from 1,4-bis(dichloromethylsilyl)benzene showed a hydrophobic nature. The difference affected the phenol adsorption behavior from dilute aqueous solutions.

Original languageEnglish
Pages (from-to)5223-5229
Number of pages7
JournalChemistry of Materials
Volume18
Issue number22
DOIs
Publication statusPublished - 2006 Oct 31

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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