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Theoretical studies on the properties of acid site in isomorphously substituted ZSM-5

✍ Scribed by S.P. Yuan; J.G. Wang; Y.W. Li; S.Y. Peng


Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
186 KB
Volume
178
Category
Article
ISSN
1381-1169

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Proton magic-angle-spinning nuclear magnetic resonance <lH MAS NMR) spectroscopy may yield quantitative information about Brbnsted acid sites, the extent of structural defects and non-framework species in the intra-zeolitic channels. We show that the extremely high concentration of silanol groups in