Solid-state 27Al and cross-polarization 13C magic-angle spinning nuclear magnetic resonance characterisation of aluminas derived from basic aluminum succinate.
Solid-state 27Al and cross-polarization (CP) 13C magic-angle spinning nuclear magnetic resonance (MAS NMR) was used to characterise aluminas obtained by calcining basic aluminium succinate at different temperatures. In basic aluminium succinate, aluminium is in the tetrahedral coordination only. However, in both X-ray amorphous and gamma-aluminas aluminium is in the tetrahedral and octahedral coordination. The intensity of the aluminium peaks is at a maximum for samples calcined at 700 degrees C. 13C CP MAS NMR indicates the bonding of Al with carbon of the carboxylate group in basic aluminium succinate. Samples calcined at 400-870 degrees C do not give 13C spectra.
Rao
P K
PK
Catalysis Section, Indian Institute of Chemical Technology, Hyderabad.
Sivaraj
C
C
Reddy
G K
GK
Rao
V V
VV
Mastikhin
V M
VM
D000535:Aluminum / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013386:Succinates / Q000737:chemistry; D013696:Temperature
D013386:Succinates; D000535:Aluminum