INFLUENCE OF WATER IN THE REACTION OF GAMMA-AMINOPROPYLTRIETHOXYSILANE WITH SILICA-GEL - A FOURIER-TRANSFORM INFRARED AND CROSS-POLARIZATION MAGIC-ANGLE-SPINNING NUCLEAR-MAGNETIC-RESONANCE STUDY

被引：109

作者：

VRANCKEN, KC ^{[1
]}

VANDERVOORT, P ^{[1
]}

GILLISDHAMERS, I ^{[1
]}

VANSANT, EF ^{[1
]}

GROBET, P ^{[1
]}

机构：

[1] CATHOLIC UNIV LEUVEN,FAC AGR SCI,SURFACE ANAL LAB,B-3001 HEVERLEE,BELGIUM

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1992年 / 88卷 / 21期

关键词：

D O I：

10.1039/ft9928803197

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silica gel has been modified with gamma-aminopropyltriethoxysilane under varying conditions, controlling the influence of water in the different modification stages, Diffuse reflectance infrared Fourier-transform (DRIFT) spectra revealed the influence of surface water in the reaction stage and of air humidity in the curing stage. These results were confirmed and refined by Si-29 and C-13 cross-polarisation magic-angle-spinning nuclear magnetic resonance (CPMASNMR) spectroscopy. Combining the results of both techniques, four modification structures present on the silica surface are proposed, depending on the conditions used.

引用

页码：3197 / 3200

页数：4

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