Raman microscopy of formamide-intercalated kaolinites treated by controlled-rate thermal analysis technology

Frost, Ray L., Kristof, Janos, Horvath, Erzsebet, & Kloprogge, J. Theo (2001) Raman microscopy of formamide-intercalated kaolinites treated by controlled-rate thermal analysis technology. Journal of Raman Sepctroscopy, 32(10), pp. 873-880.

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Abstract

Raman spectroscopy of formamide-intercalated kaolinites treated using controlled-rate thermal analysis technology (CRTA), allowing the separation of adsorbed formamide from intercalated formamide in formamide-intercalated kaolinites, is reported. The Raman spectra of the CRTA-treated formamide-intercalated kaolinites are significantly different from those of the intercalated kaolinites, which display a combination of both intercalated and adsorbed formamide. An intense band is observed at 3629 cm-1, attributed to the inner surface hydroxyls hydrogen bonded to the formamide. Broad bands are observed at 3600 and 3639 cm-1, assigned to the inner surface hydroxyls, which are hydrogen bonded to the adsorbed water molecules. The hydroxyl-stretching band of the inner hydroxyl is observed at 3621 cm-1 in the Raman spectra of the CRTA-treated formamide-intercalated kaolinites. The results of thermal analysis show that the amount of intercalated formamide between the kaolinite layers is independent of the presence of water. Significant differences are observed in the CO stretching region between the adsorbed and intercalated formamide.

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8 citations in Scopus
8 citations in Web of Science®
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ID Code: 23014
Item Type: Journal Article
Refereed: Yes
DOI: 10.1002/jrs.751
ISSN: 0377-0486
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2001 John Wiley and Sons
Deposited On: 17 Jun 2009 13:33
Last Modified: 10 Aug 2011 15:19

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