硅胶固载硅烷偶联剂的核磁共振波谱研究

波谱学杂志

硅胶固载硅烷偶联剂的核磁共振波谱研究

赵天波，李凤艳，汪燮卿，王京，陈拥军，李本高

北京石油化工学院应用化学系，北京 102617；北京石油化工科学研究院，北京 100083

收稿日期:2002-03-18 修回日期:2002-04-23 出版日期:2002-12-05 发布日期:2002-12-05
作者简介:赵天波（1958-），男，吉林长春人，博士，教授，主要从事精细化工和分析化学领域的研究工作.

CHARACTERIZATION OF REACTION-CARRYING SILOXANE ON THE SURFACE OF SILICA GEL BY NUCLEAR MAGNETIC RESONANCE SPECTROMETRY

ZHAO Tian-bo，LI Feng-yan，WANG Xie-qing，WANG Jing，CHEN Yong-jun，LI Ben-gao

Department of Applied Chemistry, Beijing Institute of Potrochemical Technology, Beijing 102617, China；Beijing Research Institute of Petrochemical Processing, Beijing 100083, China

Received:2002-03-18 Revised:2002-04-23 Online:2002-12-05 Published:2002-12-05

摘要/Abstract

摘要：

通过核磁共振波谱对硅胶固载γ-胺丙基三甲氧基硅烷和γ-氯丙基三甲氧基硅烷的原料和中间产物进行表征. 原料硅胶核磁共振谱上存在与表面羟基相关的峰，但不是很明显；采用交叉极化方法测定的原料硅胶和固载胺丙基硅烷产物的交叉极化硅核磁共振谱极大提高了与表面羟基相联的硅谱峰的强度，进一步说明了硅胶表面的硅羟基反应比较完全；固载γ-氯丙基三甲氧基硅烷产物的交叉极化硅核磁共振谱表明，在硅胶表面上已固载了氯丙基硅烷.

关键词: ²⁹Si NMR, 硅胶载体, 表面羟基, 固载反应

Abstract:

The silica gel carried γ-chlopropyltrimethoxysilane and γ-aminopropyl trimethoxysilane were characterized by nuclear magnetic resonance spectrometry. It was shown that the hydroxyl groups on the surface of silica gel substrate giv es only non-distinctive bands. The intensities of the bands related to the surface hydroxyl groups can be remarkably enhanced by cross polarization. The result suggests that γ-chlopropyltrimethoxysilane and γ-aminopropyltrimethoxysilane we recarried on the surface of the silicagel, and the reactions were relatively completed.

Key words: nuclear magnetic resonance spectrometry, silica gel carrier, surface hydroxyl groups, carrying reaction

中图分类号:

TQ455.4

赵天波，李凤艳，汪燮卿，王京，陈拥军，李本高. 硅胶固载硅烷偶联剂的核磁共振波谱研究[J]. 波谱学杂志.