Transmission infrared spectra of different kaolinites were studied by curve fitting. These spectra generally exhibit four hydroxyl stretching bands. In this article we show that a fifth OH band (already identified in Raman and photoacoustic IR spectra of kaolinites) is also observed in transmission IR spectra of hydrothermal and authigenic kaolinites, which have a high degree of crystallinity. This additional band is weak or undetectable for kaolinites with a low degree of crystallinity.
|Number of pages||7|
|Journal||Journal of Colloid and Interface Science|
|State||Published - 15 Apr 1999|
- Band Z
- Hydroxyl-stretching bands
- Infrared spectra
- Raman spectra