Solid‐State NMR Studies of the Structure and Reactivity of Metakaolinite
- 1 May 1990
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 29 (5) , 553-554
- https://doi.org/10.1002/anie.199005531
Abstract
Si atoms in various environments, as well as tetra‐, penta‐, and hexacoordinated AI atoms, have been observed in metakaolinite by high‐resolution solid‐state NMR spectroscopy. Their ratios depend upon the calcination temperature. Studies have shown that the most reactive metakaolinite (calcination temperature 480‐500 °C) is associated with a minimum concentration of hexacoordinate and a maximum concentration of tetra‐ and pentacoordinate Al.Keywords
This publication has 11 references indexed in Scilit:
- Structural Characterization of Non‐Oxide Chalcogenide Glasses using Solid State NMRAngewandte Chemie, 1989
- Structural Characterization of Non‐Oxide Chalcogenide Glasses using Solid State NMRAngewandte Chemie International Edition in English, 1989
- Revisiting kaolinite dehydroxylation: a silicon-29 and aluminum-27 MAS NMR studyJournal of the American Chemical Society, 1989
- Aluminum‐27 and Silicon‐29 Magic‐Angle Spinning Nuclear Magnetic Resonance Study of the Kaolinite‐Mullite TransformationJournal of the American Ceramic Society, 1988
- Conductimetric investigations on the dissolution of metakaolinite in dilute hydrofluoric acid. Structural implicationsClay Minerals, 1988
- 29Si- and27Al-MAS/NMR study of the thermal transformations of kaoliniteClay Minerals, 1987
- High-resolution aluminum-27 NMR of aluminosilicatesJournal of the American Chemical Society, 1986
- Order-disorder in 1:1 type clay minerals by solid-state27Al and29Si magic-angle-spinning NMR spectroscopyClay Minerals, 1985
- The point of zero charge (pzc) of kaolinite and SiO2+AI2O3 mixturesClay Minerals, 1974
- Variability in “crystallinity” Values among the Kaolin Deposits of the Coastal Plain of Georgia and South CarolinaClays and clay minerals (National Conference on Clays and Clay Minerals), 1962