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

    Research output: Contribution to journalArticle

    45 Citations (Scopus)

    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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    Benzene
    Phenol
    Phenols
    Hydrolysis
    Crystalline materials
    Adsorption
    octosilicate

    ASJC Scopus subject areas

    • Materials Chemistry
    • Materials Science(all)

    Cite this

    Synthesis of microporous inorganic-organic hybrids from layered octosilicate by silylation with 1,4-bis(trichloro- and dichloromethyl-silyl) benzenes. / Mochizuki, Dai; Kowata, Sachiko; Kuroda, Kazuyuki.

    In: Chemistry of Materials, Vol. 18, No. 22, 31.10.2006, p. 5223-5229.

    Research output: Contribution to journalArticle

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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.",
    author = "Dai Mochizuki and Sachiko Kowata and Kazuyuki Kuroda",
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    AU - Kowata, Sachiko

    AU - Kuroda, Kazuyuki

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    AB - 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.

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