Quantitative Measurement of the Brönsted Acid Sites in Solid Acids: Toward a Single-Site Design of Mo-Modified ZSM-5 Zeolite
✍ Scribed by Tessonnier, Jean-Philippe; Louis, Benoît; Walspurger, Stephane; Sommer, Jean; Ledoux, Marc-Jacques; Pham-Huu, Cuong
- Book ID
- 121326167
- Publisher
- American Chemical Society
- Year
- 2006
- Tongue
- English
- Weight
- 131 KB
- Volume
- 110
- Category
- Article
- ISSN
- 0022-3654
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📜 SIMILAR VOLUMES
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
A zinc-modi®ed ZSM-5 catalyst was prepared by a solid-state reaction between zinc dust and H-ZSM-5. The resulting catalyst is as active for the aromatization of ethane as zinc-modi®ed ZSM-5 prepared by impregnation.