Thermal and hydrothermal stability of amino-functionalized SBA-16 and promotion of hydrophobicity by silylation

Jianwen Wei; Jingjin Shi; Hua Pan; Qingfa Su; Jibao Zhu; Yao Shi

doi:10.1016/j.micromeso.2008.08.003

Thermal and hydrothermal stability of amino-functionalized SBA-16 and promotion of hydrophobicity by silylation

Jianwen Wei, Jingjin Shi, Hua Pan, Qingfa Su, Jibao Zhu, Yao Shi

Zhejiang University

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

53 Scopus citations

Abstract

Amino-functionalized SBA-16 were prepared by silylating various N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AEAPS) contents on the SBA-16 supports, and their hydrophobicity, thermal and hydrothermal stabilities were investigated with water adsorption isotherms, temperature-programmed-degradation mass spectrometry (TPD-MS) and N₂ adsorption-desorption. The functionalized SBA-16 samples show super hydrophobicity to the SBA-16 support, due to the coverage of silanol groups by amino-groups. The amino-groups silylated on SBA-16 are thermally stable up to 200 °C both in He and in air. Decomposition in He and combustion of the amino-groups in air were observed at higher temperature (beyond 200 °C), respectively. The functionalized SBA-16 samples show high hydrothermal stability and they are related to the extent of silylation.

Original language	English
Pages (from-to)	596-602
Number of pages	7
Journal	Microporous and Mesoporous Materials
Volume	117
Issue number	3
DOIs	https://doi.org/10.1016/j.micromeso.2008.08.003
State	Published - 15 Jan 2009
Externally published	Yes

Keywords

Hydrophobicity
Hydrothermal stability
SBA-16
Silylation
Thermal stability

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10.1016/j.micromeso.2008.08.003

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title = "Thermal and hydrothermal stability of amino-functionalized SBA-16 and promotion of hydrophobicity by silylation",

abstract = "Amino-functionalized SBA-16 were prepared by silylating various N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AEAPS) contents on the SBA-16 supports, and their hydrophobicity, thermal and hydrothermal stabilities were investigated with water adsorption isotherms, temperature-programmed-degradation mass spectrometry (TPD-MS) and N2 adsorption-desorption. The functionalized SBA-16 samples show super hydrophobicity to the SBA-16 support, due to the coverage of silanol groups by amino-groups. The amino-groups silylated on SBA-16 are thermally stable up to 200 °C both in He and in air. Decomposition in He and combustion of the amino-groups in air were observed at higher temperature (beyond 200 °C), respectively. The functionalized SBA-16 samples show high hydrothermal stability and they are related to the extent of silylation.",

keywords = "Hydrophobicity, Hydrothermal stability, SBA-16, Silylation, Thermal stability",

author = "Jianwen Wei and Jingjin Shi and Hua Pan and Qingfa Su and Jibao Zhu and Yao Shi",

year = "2009",

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doi = "10.1016/j.micromeso.2008.08.003",

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T1 - Thermal and hydrothermal stability of amino-functionalized SBA-16 and promotion of hydrophobicity by silylation

AU - Wei, Jianwen

AU - Shi, Jingjin

AU - Pan, Hua

AU - Su, Qingfa

AU - Zhu, Jibao

AU - Shi, Yao

PY - 2009/1/15

Y1 - 2009/1/15

N2 - Amino-functionalized SBA-16 were prepared by silylating various N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AEAPS) contents on the SBA-16 supports, and their hydrophobicity, thermal and hydrothermal stabilities were investigated with water adsorption isotherms, temperature-programmed-degradation mass spectrometry (TPD-MS) and N2 adsorption-desorption. The functionalized SBA-16 samples show super hydrophobicity to the SBA-16 support, due to the coverage of silanol groups by amino-groups. The amino-groups silylated on SBA-16 are thermally stable up to 200 °C both in He and in air. Decomposition in He and combustion of the amino-groups in air were observed at higher temperature (beyond 200 °C), respectively. The functionalized SBA-16 samples show high hydrothermal stability and they are related to the extent of silylation.

AB - Amino-functionalized SBA-16 were prepared by silylating various N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AEAPS) contents on the SBA-16 supports, and their hydrophobicity, thermal and hydrothermal stabilities were investigated with water adsorption isotherms, temperature-programmed-degradation mass spectrometry (TPD-MS) and N2 adsorption-desorption. The functionalized SBA-16 samples show super hydrophobicity to the SBA-16 support, due to the coverage of silanol groups by amino-groups. The amino-groups silylated on SBA-16 are thermally stable up to 200 °C both in He and in air. Decomposition in He and combustion of the amino-groups in air were observed at higher temperature (beyond 200 °C), respectively. The functionalized SBA-16 samples show high hydrothermal stability and they are related to the extent of silylation.

KW - Hydrophobicity

KW - Hydrothermal stability

KW - SBA-16

KW - Silylation

KW - Thermal stability

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U2 - 10.1016/j.micromeso.2008.08.003

DO - 10.1016/j.micromeso.2008.08.003

M3 - 文章

AN - SCOPUS:56249095780

SN - 1387-1811

VL - 117

SP - 596

EP - 602

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

IS - 3

ER -

Thermal and hydrothermal stability of amino-functionalized SBA-16 and promotion of hydrophobicity by silylation

Abstract

Keywords

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