XRD and H-1 MAS NMR spectroscopic study of mixed oxides obtained by calcination of layered-double hydroxides

Authors
Aramendia, MA Borau, V Jimenez, C Marinas, JM Ruiz, JR Urbano, FJ
Citation
Ma. Aramendia et al., XRD and H-1 MAS NMR spectroscopic study of mixed oxides obtained by calcination of layered-double hydroxides, MATER LETT, 46(6), 2000, pp. 309-314
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
46
Issue
6
Year of publication
2000
Pages
309 - 314
Database
ISI
SICI code
0167-577X(200012)46:6<309:XAHMNS>2.0.ZU;2-V
Abstract
Three Mg/Al, Mg/Ga and Mg/Al,Ga layered-double hydroxides were synthesized and characterized from their X-ray diffraction (XRD) patterns. Calcination of these solids at 773 K yielded a mixture of oxides (MgO/Al2O3, MgO/Ga2O3 and MgO/Al2O3/Ga2O3) that was also characterized by the XRD technique. Surf ace proton sites in these mixed oxides were determined by H-1 MAS NMR spect roscopy. The results are compared with those for the pure oxides. (C) 2000 Elsevier Science B.V. All rights reserved.