๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

1H MAS NMR studies on the acidity of zeolites

โœ Scribed by D. Freude; M. Hunger; H. Pfeifer; W. Schwieger

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
427 KB
Volume
128
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

๐Ÿ“œ SIMILAR VOLUMES

Fluorine-19 MAS and 1Hโ†’19F CP/MAS NMR st
Fluorine-19 MAS and 1Hโ†’19F CP/MAS NMR studies of Viton fluoropolymers
โœ Gustavo A. Monti; Robin K. Harris ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 191 KB ๐Ÿ‘ 2 views

Fluorine-19M1HN nuclear magnetic resonance (NMR) at 188.29 MHz, including 1H ] 19FM1HN crosspolarization (CP) with high-speed magic-angle spinning (MAS), was used to study some ร‘uoropolymers of the Viton type. The systems examined were (a) copolymers of vinylidene ร‘uoride and hexaร‘uoropropene and (b

1H NMR studies of the mobility of olefin
1H NMR studies of the mobility of olefins adsorbed in zeolites of type NaX
โœ Winfried Bรถhlmann; Dieter Michel; Jรถrg Roland ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 114 KB ๐Ÿ‘ 1 views

High-resolution 1 H magic angle spinning (MAS) NMR investigations of 1-butene and 1-pentene molecules sorbed in zeolite NaX are presented in which a considerable decrease in the linewidths compared with common experiments is achieved by using the MAS technique. The highly resolved spectra were recor

1H solid-state NMR studies of the geomet
1H solid-state NMR studies of the geometry of Brรธnsted acid sites in zeolites H-ZSM-5
โœ Michael Hunger; Dieter Freude; Dieter Fenzke; Harry Pfeifer ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 419 KB

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