Lamellar hexadecyltrimethylammonium silicates derived from kanemite

Tatsuo Kimura; Daigo Itoh; Nanae Okazaki; Mizue Kaneda; Yasuhiro Sakamoto; Osamu Terasaki; Yoshiyuki Sugahara; Kazuyuki Kuroda

doi:10.1021/la000325t

Lamellar hexadecyltrimethylammonium silicates derived from kanemite

Tatsuo Kimura, Daigo Itoh, Nanae Okazaki, Mizue Kaneda, Yasuhiro Sakamoto, Osamu Terasaki, Yoshiyuki Sugahara, Kazuyuki Kuroda

School of Advanced Science and Engineering

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

36 Citations (Scopus)

Abstract

Lamellar organoammonium silicates with variable silicon environments have been synthesized by the reaction of a layered polysilicate kanemite with aqueous solutions of hexadecyltrimethylammonium (C₁₆TMA) chloride. While the structure of kanemite is composed of only Q³ silicate species ((SiO)₃SiO), SiO₄ units with both Q³ and Q⁴ ((SiO)₄Si) environments were present in the silicate frameworks of the lamellar C₁₆TMA silicates. The Q⁴ species mainly formed by intralayer condensation of the Q³ species in the individual silicate sheets in kanemite rather than by interlayer condensation between the adjacent sheets. The intralayer condensation can be suppressed by lowering the reaction temperature and/or shortening the reaction time, which results in the relative retention of the silicate framework of kanemite in the lamellar C₁₆TMA silicates.

Original language	English
Pages (from-to)	7624-7628
Number of pages	5
Journal	Langmuir
Volume	16
Issue number	20
DOIs	https://doi.org/10.1021/la000325t
Publication status	Published - 2000 Oct 3

ASJC Scopus subject areas

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

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title = "Lamellar hexadecyltrimethylammonium silicates derived from kanemite",

abstract = "Lamellar organoammonium silicates with variable silicon environments have been synthesized by the reaction of a layered polysilicate kanemite with aqueous solutions of hexadecyltrimethylammonium (C16TMA) chloride. While the structure of kanemite is composed of only Q3 silicate species ((SiO)3SiO), SiO4 units with both Q3 and Q4 ((SiO)4Si) environments were present in the silicate frameworks of the lamellar C16TMA silicates. The Q4 species mainly formed by intralayer condensation of the Q3 species in the individual silicate sheets in kanemite rather than by interlayer condensation between the adjacent sheets. The intralayer condensation can be suppressed by lowering the reaction temperature and/or shortening the reaction time, which results in the relative retention of the silicate framework of kanemite in the lamellar C16TMA silicates.",

author = "Tatsuo Kimura and Daigo Itoh and Nanae Okazaki and Mizue Kaneda and Yasuhiro Sakamoto and Osamu Terasaki and Yoshiyuki Sugahara and Kazuyuki Kuroda",

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T1 - Lamellar hexadecyltrimethylammonium silicates derived from kanemite

AU - Kimura, Tatsuo

AU - Itoh, Daigo

AU - Okazaki, Nanae

AU - Kaneda, Mizue

AU - Sakamoto, Yasuhiro

AU - Terasaki, Osamu

AU - Sugahara, Yoshiyuki

AU - Kuroda, Kazuyuki

PY - 2000/10/3

Y1 - 2000/10/3

N2 - Lamellar organoammonium silicates with variable silicon environments have been synthesized by the reaction of a layered polysilicate kanemite with aqueous solutions of hexadecyltrimethylammonium (C16TMA) chloride. While the structure of kanemite is composed of only Q3 silicate species ((SiO)3SiO), SiO4 units with both Q3 and Q4 ((SiO)4Si) environments were present in the silicate frameworks of the lamellar C16TMA silicates. The Q4 species mainly formed by intralayer condensation of the Q3 species in the individual silicate sheets in kanemite rather than by interlayer condensation between the adjacent sheets. The intralayer condensation can be suppressed by lowering the reaction temperature and/or shortening the reaction time, which results in the relative retention of the silicate framework of kanemite in the lamellar C16TMA silicates.

AB - Lamellar organoammonium silicates with variable silicon environments have been synthesized by the reaction of a layered polysilicate kanemite with aqueous solutions of hexadecyltrimethylammonium (C16TMA) chloride. While the structure of kanemite is composed of only Q3 silicate species ((SiO)3SiO), SiO4 units with both Q3 and Q4 ((SiO)4Si) environments were present in the silicate frameworks of the lamellar C16TMA silicates. The Q4 species mainly formed by intralayer condensation of the Q3 species in the individual silicate sheets in kanemite rather than by interlayer condensation between the adjacent sheets. The intralayer condensation can be suppressed by lowering the reaction temperature and/or shortening the reaction time, which results in the relative retention of the silicate framework of kanemite in the lamellar C16TMA silicates.

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Lamellar hexadecyltrimethylammonium silicates derived from kanemite

Abstract

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