介孔分子筛SBA-15中表面羟基及模板剂去除的1H核磁共振研究

被引:9
作者
石磊
邹雁
庄继华
贺鹤勇
机构
[1] 复旦大学化学系
[2] 复旦大学化学系 上海
[3] 上海
关键词
介孔分子筛; SBA-15; 超高速1H核磁共振; 表面羟基; 表征;
D O I
10.15943/j.cnki.fdxb-jns.2002.03.015
中图分类号
O657.2 [磁化学分析法];
学科分类号
070302 ; 081704 ;
摘要
1H超高速魔角旋转固体核磁共振技术可直接和定量地检测SBA 15表面存在的 3种硅羟基 ,即单羟基(Hs) ,氢键羟基 (Hh)和双羟基 (Hg) .此方法可用于准确跟踪介孔分子筛的嫁接和改性过程 .1H核磁共振亦发现 ,在不同的萃取条件下 ,多种有机溶剂不能完全除去模板剂 ,焙烧是在嫁接前除去模板剂的有效方法 .
引用
收藏
页码:313 / 316
页数:4
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