Attachment of the sulfonic acid group in the interlayer space of a layered alkali silicate, octosilicate

Takanori Nakamura; Makoto Ogawa

doi:10.1021/la300390s

Attachment of the sulfonic acid group in the interlayer space of a layered alkali silicate, octosilicate

Takanori Nakamura, Makoto Ogawa^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

The surface modification of a layered alkali silicate, octosilicate (Na ₂Si ₈O ₁₇•nH2O), with a sulfonic acid group was conducted. The sulfonic acid group was attached to the silicate layer by the reaction of octosilicate with phenethyl(dichloro)methylsilane and the subsequent sulfonation of the attached phenethyl groups with chlorosulfonic acid. The modified octosilicate is a solid acid as indicated by the intercalation of dodecylamine. A systematic expansion of the interlayer space was observed by the ion exchange with a series of alkyltrimethylammonium ions to show the variation of the layer charge density.

Original language	English
Pages (from-to)	7505-7511
Number of pages	7
Journal	Langmuir
Volume	28
Issue number	19
DOIs	https://doi.org/10.1021/la300390s
Publication status	Published - 2012 May 15

ASJC Scopus subject areas

Electrochemistry
Condensed Matter Physics
Surfaces and Interfaces
Materials Science(all)
Spectroscopy

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10.1021/la300390s

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abstract = "The surface modification of a layered alkali silicate, octosilicate (Na 2Si 8O 17•nH2O), with a sulfonic acid group was conducted. The sulfonic acid group was attached to the silicate layer by the reaction of octosilicate with phenethyl(dichloro)methylsilane and the subsequent sulfonation of the attached phenethyl groups with chlorosulfonic acid. The modified octosilicate is a solid acid as indicated by the intercalation of dodecylamine. A systematic expansion of the interlayer space was observed by the ion exchange with a series of alkyltrimethylammonium ions to show the variation of the layer charge density.",

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N2 - The surface modification of a layered alkali silicate, octosilicate (Na 2Si 8O 17•nH2O), with a sulfonic acid group was conducted. The sulfonic acid group was attached to the silicate layer by the reaction of octosilicate with phenethyl(dichloro)methylsilane and the subsequent sulfonation of the attached phenethyl groups with chlorosulfonic acid. The modified octosilicate is a solid acid as indicated by the intercalation of dodecylamine. A systematic expansion of the interlayer space was observed by the ion exchange with a series of alkyltrimethylammonium ions to show the variation of the layer charge density.

AB - The surface modification of a layered alkali silicate, octosilicate (Na 2Si 8O 17•nH2O), with a sulfonic acid group was conducted. The sulfonic acid group was attached to the silicate layer by the reaction of octosilicate with phenethyl(dichloro)methylsilane and the subsequent sulfonation of the attached phenethyl groups with chlorosulfonic acid. The modified octosilicate is a solid acid as indicated by the intercalation of dodecylamine. A systematic expansion of the interlayer space was observed by the ion exchange with a series of alkyltrimethylammonium ions to show the variation of the layer charge density.

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Attachment of the sulfonic acid group in the interlayer space of a layered alkali silicate, octosilicate

Abstract

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