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http://nopr.niscpr.res.in/handle/123456789/46539| Title: | Spin-lattice and spin-spin relaxation of 29Si via paramagnetic centers in the MAS NMR of zeolites |
| Authors: | Thangaraj, A Ganapathy, S |
| Issue Date: | Nov-1990 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The 29Si nuclear spin-lattice (T1) and spin-spin relaxation (T2) decays have been measured using the magic angle spinning (MAS) technique in zeolite-Y with varying amounts of Fe3+. Analysis of T1 data shows that the 29Si nuclei are dipolar-coupled to paramagnetic centres and the observed non-exponential decay of the 29Si spin magnetisation can be satisfactorily explained by a suitable theory. The 29Si transverse magnetisation, on the other hand, is both homogeneously and in homogeneously broadened by the presence of Fe3+ centers. |
| Page(s): | 1080-1082 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.29A(11) [November 1990] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 29A(11) 1080-1082.pdf | 581.17 kB | Adobe PDF | View/Open |
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