๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Studies of proton conduction in the zeolites H-natrolite and H-mordenite

โœ Scribed by M. Lal; C.M. Johnson; A.T. Howe


Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
338 KB
Volume
5
Category
Article
ISSN
0167-2738

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Nature of the acidic protons in H-morden
โœ Toshihide Baba; Norito Komatsu; Yoshio Ono; Hisashi Sugisawa; Toshiro Takahashi ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 198 KB

The temperature dependence of the line-shape of 1H MAS NMR spectra of H-mordenite and H-MCM-22 was examined. Upon raising the temperature of measurements stepwise from 298 to 503 K, the line-width of 1H MAS NMR of acidic protons in H-mordenite with SiO 2 /Al 2 O 3 ratio of 106 increased, went throug

Theoretical study of the adsorption of i
โœ L.A Garcฤฑฬa-Serrano; C.A Flores-Sandoval; I.P Zaragoza ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 237 KB

Values of relative interaction energy between an isobutane molecule and the surface of the H-mordenite zeolite were obtained. Sixteen tetrahedral sites were taken into account for the surface. Results showed that the adsorption energies were 4 and 8 kJ/mol, for ab initio restricted Hartree-Fock (RHF

Detection of the inhomogeneity of Brรธnst
โœ Hsien-Ming Kao; Chun-Yu Yu; Ming-Chu Yeh ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 161 KB

The Brรธnsted acidity of H-mordenite (H-MOR) and H-b with similar Si/Al ratios has been characterized by conventional multinuclear solid-state NMR. 1 H/ 27 Al TRAPDOR NMR showed the presence of at least two different types of Brรธnsted acid sites in H-b. On the other hand, only a single 1 H resonance

1H solid-state NMR studies of the geomet
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