𝔖 Bobbio Scriptorium
✦   LIBER   ✦

FT-IR study of the brønsted acidity of phosphated and sulphated silica catalysts

✍ Scribed by M. Lion; M. Maache; J.C. Lavalley; G. Ramis; G. Busca; P.F. Rossi; V. Lorenzelli

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
329 KB
Volume
218
Category
Article
ISSN
0022-2860

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Solid-state NMR studies of the geometry
Solid-state NMR studies of the geometry of brønsted acid sites in zeolitic catalysts
✍ Dieter Freude; Jacek Klinowski; Halimaton Hamdan 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 673 KB

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