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Infrared and infrared emission spectroscopic study of China typical kaolinite and halloysite

Frost, Ray L., Yang, Jing, Cheng, Hongfei, Liu, Qinfu, & He, Junkai (2010) Infrared and infrared emission spectroscopic study of China typical kaolinite and halloysite. Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy, 77(5), pp. 1014-1020.

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Abstract

The structure and thermal stability between typical China kaolinite and halloysite were analysed by X-ray diffraction (XRD), infrared spectroscopy, infrared emission spectroscopy (IES) and Raman spectroscopy. Infrared emission spectroscopy over the temperature range of 300 to 700 °C has been used to characterise the thermal decomposition of both kaolinite and halloysite. Halloysite is characterised by two bands in the water bending region at 1629 and 1648 cm-1, attributed to structure water and coordinated water in the interlayer. Well defined hydroxyl stretching bands at around 3695, 3679, 3652 and 3625 cm-1 are observed for both kaolinite and halloysite. In the 550 °C infrared emission spectrum of halloysite is similar to that of kaolinite in 650-1350 cm-1 region. The infrared emission spectra of halloysite were found to be considerably different to that of kaolinite at lower temperatures. This difference is attributed to the fundamental difference in the structure of the two minerals.

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ID Code: 38264
Item Type: Journal Article
Keywords: Infrared, Infrared emission spectra, Raman, Kaolinite, Halloysite
DOI: 10.1016/j.saa.2010.08.039
ISSN: 1386-1425
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100) > Analytical Spectrometry (030101)
Divisions: Past > Schools > Chemistry
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2010 Elsevier
Deposited On: 02 Nov 2010 08:28
Last Modified: 01 Mar 2012 00:20

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