ANSTO Publications Online >
Journal Publications >
Journal Articles >

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/6377

Title: Inelastic neutron scattering analysis of the thermal decomposition of kaolinite to metakaolin
Authors: White, CE
Kearley, GJ
Provis, JL
Riley, DP
Keywords: KAOLINITE
OSCILLATION MODES
DEFORMATION
TORSION
CALCINATION
ATOMS
Issue Date: 12-Dec-2013
Publisher: Elsevier
Citation: White, C. E., Kearley, G. J., Provis, J. L., & Riley, D. P. (2013). Inelastic neutron scattering analysis of the thermal decomposition of kaolinite to metakaolin. Chemical Physics, 427, 82-86.
Abstract: Understanding the formation of metakaolin via kaolinite dehydroxylation is extremely important for the optimization of various industrial processes. Recent investigations have reported that the different types of hydrogen atoms in kaolinite are removed concurrently during the dehydroxylation process. Here, inelastic neutron scattering (INS) is used to analyze the location and dynamics of hydrogen atoms in kaolinite, together with the changes induced during dehydroxylation. This is achieved by using prior knowledge of how the inner and inner surface hydrogen atoms contribute to the kaolinite INS spectrum in the 200–1200 cm−1 range, in combination with a semi-quantitative analysis of the experimental INS spectra. Overall, it is seen that there is a distinct preferential loss of inner surface hydrogen-atom types during the dehydroxylation process, as determined from analysis of the Al–O–H vibrational modes (consisting of deformation and torsion) in the INS spectrum. © 2013, Elsevier B.V.
URI: http://dx.doi.org/10.1016/j.chemphys.2013.08.009
http://apo.ansto.gov.au/dspace/handle/10238/6377
ISSN: 0301-0104
Appears in Collections:Journal Articles

Files in This Item:

There are no files associated with this item.

Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback