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Modification of kaolinite surfaces through mechanochemical treatment—a mid-IR and near-IR spectroscopic study

Frost, Ray L., Kristof, Janos , Mako, Eva , & Kloprogge, J. Theo (2002) Modification of kaolinite surfaces through mechanochemical treatment—a mid-IR and near-IR spectroscopic study. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 58A(13), pp. 2849-2859.

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Abstract

DRIFT spectroscopy has been used to study the changes in the molecular structure of kaolinite mechanochemically activated through dry grinding in the presence and absence of quartz. A comparison is also made with structure of mechanochemically activated kaolinite, which has been intercalated with potassium acetate. The effect of dry grinding with quartz causes the loss of intensity of the hydroxyl stretching and deformation bands of kaolinite to a much greater extent than for the kaolinite mechanochemically activated in the absence of quartz. The effect of intercalation upon the structure of the mechanochemically activated kaolinite is an apparent restructuring of the kaolinite layers. Two steps in the dehydroxylation of the kaolinite through mechanochemical activation and the hydration of the modified kaolinite surface are observed.

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ID Code: 1085
Item Type: Journal Article
Keywords: Kaolinite, intercalation, mechanochemical activation, XRD, Raman microscopy, DRIFT spectroscopy
DOI: 10.1016/S1386-1425(02)00033-1
ISSN: 1386-1425
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2002 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 21 Apr 2005
Last Modified: 11 Aug 2011 01:51

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