Theoretical study of the enhanced Brønsted acidity of Zn2+‐exchanged zeolites
✍ Scribed by Luis A.M.M. Barbosa; Rutger A. van Santen
- Book ID
- 110380794
- Publisher
- Springer US
- Year
- 1999
- Tongue
- English
- Weight
- 223 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1011-372X
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📜 SIMILAR VOLUMES
The instability of acceptor graphite intercalation compounds (GICs) with Brønsted acids is a main obstacle to their extensive industrial use. Electron transfer from the solvated anion to the positively charged graphene layer is considered to be the first and rate-limiting step in the decomposition p
H 2'AI and %i solid-state NMR was used to determine the geometry of the Brsnsted acid site in zeolites. The mean distance between acidic protons in bridging hydroxyl groups and the nearest framework Al atom is 2.38 ? 0.04 8, in zeolite H-Y and 2.48 2 0.04 A in H-ZSM-5. The quadrupole frequency of fr