Ask for a reprint
email :
* Give your email
1999
ACL
|
V.Montouillout, D.Massiot, A.Douy, J.P.Coutures, 'Characterization of MgAl2O4 precursor powders prepared by aqueous routes: 27Al Magic Angle Spinning (MAS), Multiple-Quantum (MQ-MAS) and 27Al-{1H} Rotational Echo Double Resonance (REDOR) NMR.', J. Am. Ceram. Soc. 82 3299-3304 (1999) doi:10.1111/j.1151-2916.1999.tb02243.x
MgAl2O4 spinel precursors have been prepared by two different aqueous synthesis routes: spray drying and citrate complexing. The spinel precursors exhibit different morphology and crystallization behavior. 27Al high-resolution magic-angle spinning (MAS), multiple quantum MAS, and 27Al-{1H} rational echo double resonance (REDOR) nuclear magnetic resonance experiments, show that the spinel precursors have different aluminum local structures. 27Al-{1H} REDOR experiments detect AlIV- and AlV-bearing proton-free domains, possibly stabilized by residual carbonates, characteristic of the complexed precursor.
|
|