For the zeolite offretite, a formula is proposed which includes the framework Si/AI ratio (R), the partitioning ratio of AI over two crystallographically non-equivalent tetrahedral sites (r) and intensities of the observed peaks in the 29Si MAS NMR spectrum. By this formula, the framework Si/AI rati
The evaluation of non-equivalent tetrahedral sites from 29Si NMR chemical shifts in zeolites and related aluminosilicates
β Scribed by J.M. Thomas; J. Klinowski; S. Ramdas; B.K. Hunter; D.T.B. Tennakoon
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 417 KB
- Volume
- 102
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Keccivcd 16 August 19S3 '9Si MAS NMR spectra of zeolites are much sinlplified followins dealumination and the resultin_e spectra yield a quantitxtivc correlation betnecn chemical shift and tetrahedral angle. This corrclntion is useful in the structural elucidation of zeolitts. silicas and other aluminosilicstes.
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