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27Al nutation NMR of zeolites

✍ Scribed by F.M.M. Geurts; A.P.M. Kentgens; W.S. Veeman

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
367 KB
Volume
120
Category
Article
ISSN
0009-2614

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✦ Synopsis

AI NhlR nulnlion experiment for qundrupolar nuclei d ~rwlopcd by Snmoson and Lippmnn has been applied 10 "Al spins in rhe zeoliw co~~lysr H-ZSM-5. The "Al numGon sprc~a change with WBE~ con~cnl in the portzs or this zcolik. rrom which ir can bc concluded thal in the hydrated SWIG many "Al nuclei arc in highly symmetric surroundings. On dehydrakn the quadrupolc in~erxtion or these spins increases draslkilly. beyond dskaion. A second type or "Al spin with an inbxmrdisw quadrupolc intemc1ion lhat hardly chnners on hydrmion/drhydnIion is drltclsd.

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