Enlargement of mesopores of 2-D orthorhombic KSW-2 type silica by the addition of poly(oxyethylene) alkyl ether during the mesostructural formation

Nobuyuki Takahashi; Tatsuo Kimura; Kazuyuki Kuroda

doi:10.1016/j.solidstatesciences.2010.06.023

Enlargement of mesopores of 2-D orthorhombic KSW-2 type silica by the addition of poly(oxyethylene) alkyl ether during the mesostructural formation

Nobuyuki Takahashi, Tatsuo Kimura, Kazuyuki Kuroda

School of Advanced Science and Engineering

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

1 Citation (Scopus)

Abstract

The size of mesopores in 2-D orthorhombic KSW-2 type silica, derived from a layered silicate kanemite, can be enlarged by the addition of poly(oxyethylene) alkyl ether (C₁₆EO₁₀) during the mesostructural transformation from a lamellar phase to a 2-D orthorhombic one. Precursors for pore-expanded KSW-2 type silica were prepared by an acid treatment of lamellar hexadecyltrimethylammonium-intercalated kanemite (C₁₆TMA-kanemite) in the presence of C₁₆EO₁₀. The acid treatment induces simultaneous reactions of (1) intercalation of C₁₆EO₁₀, (2) deintercalation of C₁₆TMA cations, and (3) mesostructural transformation into a 2-D orthorhombic phase. Depending on the concentration of C₁₆EO₁₀, the d₁₁ spacing of the products after the acid treatment but before calcination varied from 4.0 to 5.4 nm and that of the calcined products varied from 3.5 nm to 4.8 nm. The method provides a precise control in a certain range of the pore size of KSW-2 type mesoporous silica.

Original language	English
Pages (from-to)	714-720
Number of pages	7
Journal	Solid State Sciences
Volume	13
Issue number	4
DOIs	https://doi.org/10.1016/j.solidstatesciences.2010.06.023
Publication status	Published - 2011 Apr

Keywords

Brij56
Hexadecyltrimethylammonium
KSW-2
Kanemite
Mesoporous silica

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{dcc3cb9920f54e80b2178d4fae98ea48,

title = "Enlargement of mesopores of 2-D orthorhombic KSW-2 type silica by the addition of poly(oxyethylene) alkyl ether during the mesostructural formation",

abstract = "The size of mesopores in 2-D orthorhombic KSW-2 type silica, derived from a layered silicate kanemite, can be enlarged by the addition of poly(oxyethylene) alkyl ether (C16EO10) during the mesostructural transformation from a lamellar phase to a 2-D orthorhombic one. Precursors for pore-expanded KSW-2 type silica were prepared by an acid treatment of lamellar hexadecyltrimethylammonium-intercalated kanemite (C16TMA-kanemite) in the presence of C16EO10. The acid treatment induces simultaneous reactions of (1) intercalation of C16EO10, (2) deintercalation of C16TMA cations, and (3) mesostructural transformation into a 2-D orthorhombic phase. Depending on the concentration of C16EO10, the d11 spacing of the products after the acid treatment but before calcination varied from 4.0 to 5.4 nm and that of the calcined products varied from 3.5 nm to 4.8 nm. The method provides a precise control in a certain range of the pore size of KSW-2 type mesoporous silica.",

keywords = "Brij56, Hexadecyltrimethylammonium, KSW-2, Kanemite, Mesoporous silica",

author = "Nobuyuki Takahashi and Tatsuo Kimura and Kazuyuki Kuroda",

note = "Funding Information: We would like to acknowledge Mr. Shimon Osada (Waseda Univ.) for experimental help. This work was supported in part by the Global COE program “ Practical Chemical Wisdom ” and Elements Science and Technology Project from MEXT, Japan; A3 Foresight program “ Synthesis and Structure Resolution of Novel Mesoporous Materials ” from JSPS, Japan; and Grant-in-Aid for JSPS Fellows (for N. T.) from JSPS, Japan. ",

year = "2011",

month = apr,

doi = "10.1016/j.solidstatesciences.2010.06.023",

language = "English",

volume = "13",

pages = "714--720",

journal = "Solid State Sciences",

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publisher = "Elsevier Masson SAS",

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T1 - Enlargement of mesopores of 2-D orthorhombic KSW-2 type silica by the addition of poly(oxyethylene) alkyl ether during the mesostructural formation

AU - Takahashi, Nobuyuki

AU - Kimura, Tatsuo

AU - Kuroda, Kazuyuki

N1 - Funding Information: We would like to acknowledge Mr. Shimon Osada (Waseda Univ.) for experimental help. This work was supported in part by the Global COE program “ Practical Chemical Wisdom ” and Elements Science and Technology Project from MEXT, Japan; A3 Foresight program “ Synthesis and Structure Resolution of Novel Mesoporous Materials ” from JSPS, Japan; and Grant-in-Aid for JSPS Fellows (for N. T.) from JSPS, Japan.

PY - 2011/4

Y1 - 2011/4

N2 - The size of mesopores in 2-D orthorhombic KSW-2 type silica, derived from a layered silicate kanemite, can be enlarged by the addition of poly(oxyethylene) alkyl ether (C16EO10) during the mesostructural transformation from a lamellar phase to a 2-D orthorhombic one. Precursors for pore-expanded KSW-2 type silica were prepared by an acid treatment of lamellar hexadecyltrimethylammonium-intercalated kanemite (C16TMA-kanemite) in the presence of C16EO10. The acid treatment induces simultaneous reactions of (1) intercalation of C16EO10, (2) deintercalation of C16TMA cations, and (3) mesostructural transformation into a 2-D orthorhombic phase. Depending on the concentration of C16EO10, the d11 spacing of the products after the acid treatment but before calcination varied from 4.0 to 5.4 nm and that of the calcined products varied from 3.5 nm to 4.8 nm. The method provides a precise control in a certain range of the pore size of KSW-2 type mesoporous silica.

AB - The size of mesopores in 2-D orthorhombic KSW-2 type silica, derived from a layered silicate kanemite, can be enlarged by the addition of poly(oxyethylene) alkyl ether (C16EO10) during the mesostructural transformation from a lamellar phase to a 2-D orthorhombic one. Precursors for pore-expanded KSW-2 type silica were prepared by an acid treatment of lamellar hexadecyltrimethylammonium-intercalated kanemite (C16TMA-kanemite) in the presence of C16EO10. The acid treatment induces simultaneous reactions of (1) intercalation of C16EO10, (2) deintercalation of C16TMA cations, and (3) mesostructural transformation into a 2-D orthorhombic phase. Depending on the concentration of C16EO10, the d11 spacing of the products after the acid treatment but before calcination varied from 4.0 to 5.4 nm and that of the calcined products varied from 3.5 nm to 4.8 nm. The method provides a precise control in a certain range of the pore size of KSW-2 type mesoporous silica.

KW - Brij56

KW - Hexadecyltrimethylammonium

KW - KSW-2

KW - Kanemite

KW - Mesoporous silica

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DO - 10.1016/j.solidstatesciences.2010.06.023

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VL - 13

SP - 714

EP - 720

JO - Solid State Sciences

JF - Solid State Sciences

SN - 1293-2558

IS - 4

ER -

Enlargement of mesopores of 2-D orthorhombic KSW-2 type silica by the addition of poly(oxyethylene) alkyl ether during the mesostructural formation

Abstract

Keywords

ASJC Scopus subject areas

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