| Download | - View accepted manuscript: Magic angle spinning ²⁹Si and ²⁷Al NMR study of mordenite dealumination (PDF, 799 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1007/BF00656822 |
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| Author | Search for: Ripmeester, J. A.1; Search for: Majid, A.1; Search for: Hawkins, R. E.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Subject | Magic angle spinning ²⁹Si NMR; Magic angle spinning ²⁷Al NMR; Sodium mordenite; Zeolites |
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| Abstract | Magic angle spinning ²⁹Si NMR presents a rapid qualitative method of assessing the degree of dealumination of sodium mordenite modified by acid leaching and heat treatment. A quantitative determination of the ²⁹Si coordination sphere is hampered by the overlap of chemical shift ranges for Si-O-A1 and Si-O-H species. MAS ²⁷Al NMR indicates the presence of oetahedrally coordinated A1 in interstitial sites in all treated samples. On treating mordenite samples at high temperatures (~700°C) much of the A1 becomes invisible to the NMR experiment because of its location in sites of low symmetry and large quadrupole coupling constant. |
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| Publication date | 1983-06 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 22736 |
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| NPARC number | 15657361 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e6b16c24-3a8d-41ca-af9d-61759e6ce55b |
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| Record created | 2010-06-11 |
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| Record modified | 2020-03-13 |
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