Organic modification of the interlayer surface of kaolinite with propanediols by transesterification

Tetsuro Itagaki, Kazuyuki Kuroda*

*この研究の対応する著者

研究成果: Article査読

68 被引用数 (Scopus)

抄録

Propanediols (1,2- and 1,3-propanediols) were reacted with methoxy-modified kaolinite to form hydroxypropoxy-modified kaolinites by transesterification. Grafting occurred on the AlOH groups of the interlayer surface, which provides unique asymmetrical interlayer environments surrounded by both hydroxy groups of the diols and silicate layers, suggesting potential applications for specific adsorption and regioselective reactions in the interlayer spaces. When the reaction time was increased, 1,3-propanediol partly forms a bridge type grafting where both OH groups were bonded. Methoxy groups on the interlayer surface of kaolinite were eliminated by the grafting. The amounts of the grafted alkoxy groups per Al2Si2O5(OH)4 unit were larger than that of methoxy-modified kaolinite, indicating that not only transesterification but also further grafting onto the AlOH groups proceeded. Under milder conditions, 1,2- and 1,3-propanediols were not grafted onto the interlayer surface, but molecularly intercalated.

本文言語English
ページ(範囲)1064-1068
ページ数5
ジャーナルJournal of Materials Chemistry
13
5
DOI
出版ステータスPublished - 2003 5月 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料化学

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