Interactions of amino acids with H-ZSM-5 zeolite: An embedded ONIOM study
β Scribed by Bundet Boekfa; Piboon Pantu; Jumras Limtrakul
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 857 KB
- Volume
- 889
- Category
- Article
- ISSN
- 0022-2860
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Broad-line 'H NMR and 'H MAS NMR were used to determine the geometry of the Bransted acidic sites in zeolites H-ZSM-5. The signals obtained correspond to bridging hydroxyl groups in Si-OH-Al arrangements with an H-Al distance of 0.246-0.252 nm. The concentration of hypothetical SiOHSi groups must be