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Investigation of Natural Mordenites by Magic Angle Proton NMR

 

作者: AshokL. Cholli,   D.J. Pennino,  

 

期刊: Spectroscopy Letters  （Taylor Available online 1987）
卷期: Volume 20, issue 1  

页码: 25-36

 

ISSN:0038-7010

 

年代: 1987

 

DOI:10.1080/00387018708082273

 

出版商: Taylor & Francis Group

 

关键词: Magic angle spinning (MAS);nuclear magnetic resonance (NMR);chemical shift anisotropy (CSA);natural mordenites;zeolites;framework;pores;water

 

数据来源: Taylor

 

摘要:

Magic angle spinning proton NMR techniques were used to study natural and synthetic mordenites, and faujasite. The proton NMR line width of water molecules (whose chemical shift is similar to free water) was correlated with frame structure. In the case of heat-treated natural mordenite (250°C, 18 hours) we observed two unresolved peaks whose chemical shift are different from free water. These peaks were assigned to protons around A1 and Si sites in natural mordenites.

 

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