Influence of the SiO2/Al2O3 ratio on the
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C.V. Tuoto; A. Regina; J.B. Nagy; A. Nastro
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Article
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1998
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Elsevier Science
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English
⚖ 839 KB
Levyne-type zeolites were synthesized from gels of initial compositions 4.5Na,O--6MeQIPsA120, 3OSiO,-SOOH,O. with MeQ =methylquinuclidinium and 0.6 5 I 2 3 at 150 5 t 2 190' C. The '"Si NMR spectra show the presence of two crystallographically different sites in the structure. The 27A1 NMR spectra a