## Hgh -resolutton 27Al NhlR spectra of polycrystalhne alumrnntes have been studled at 70 4 hfHz hlaglc-angle spummg was used to reduce quadrupole effects and dlpolar mtenctlon. The isotropic \*'Al chenuul shrfts depend mamly on the AI-O coordmatlon For Al-O tetrahedra stufts of 55 to 80 ppm were
High-resolution solid-state27Al NMR studies of aluminium coordination in acidic catalysts
β Scribed by Kotsarenko, N. S. ;Mastikhin, V. M. ;Mudrakovskii, I. L. ;Shmachkova, V. P.
- Book ID
- 112683463
- Publisher
- Springer
- Year
- 1986
- Tongue
- English
- Weight
- 292 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0133-1736
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The structures of complexes obtained by the reaction of alizarin (C,,H,O,) and Al'+ in basic media depend upon the reaction solvent and the nature of the base. With aqueous or methanolic solutions of sodium hydroxide a binuclear complex [ AI,(p-OH),(C,,H,0,),(Na)4(H~O)4] was obtained, which is stabl
27A1 magic-angle-spinning (MAS) NMR spectra with and without cross-polarization and quadrupole nutation spectra with MAS of the molybdenum bronze Na02s (H20)yMoO3 intercalated with aluminium polyoxycations have been measured. Apart from the signal from 4-coordinated AI at 64.6 ppm assigned to the in
Zentrnlinstitut fur nnorganische Chemie, Akademie der Wissemchaften der DDR, Berlin-DDR ## Solid-state High-resolution 27Al-NMR Studies of Sodium Alumosilicate Glasses with Different Thermal History The dependence of various structure parameters (stability of coordination polyhedra, chemical bond