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Kloprogge JT, Duong LV, Wood BJ, et al. XPS study of the major minerals in bauxite: gibbsite, bayerite and (pseudo-)boehmite. J Colloid Interface Sci. 2005;296(2):572-6doi: 10.1016/j.jcis.2005.09.054.
Kloprogge, J. T., Duong, L. V., Wood, B. J., & Frost, R. L. (2006). XPS study of the major minerals in bauxite: gibbsite, bayerite and (pseudo-)boehmite. Journal of colloid and interface science, 296(2), 572-6. https://doi.org/10.1016/j.jcis.2005.09.054
Kloprogge, J Theo, et al. "XPS study of the major minerals in bauxite: gibbsite, bayerite and (pseudo-)boehmite." Journal of colloid and interface science vol. 296,2 (2006): 572-6. doi: https://doi.org/10.1016/j.jcis.2005.09.054
Kloprogge JT, Duong LV, Wood BJ, Frost RL. XPS study of the major minerals in bauxite: gibbsite, bayerite and (pseudo-)boehmite. J Colloid Interface Sci. 2006 Apr 15;296(2):572-6. doi: 10.1016/j.jcis.2005.09.054. Epub 2005 Oct 17. PMID: 16236302.
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J Colloid Interface Sci. 2006 Apr 15;296(2):572-6. doi: 10.1016/j.jcis.2005.09.054. Epub 2005 Oct 17.

XPS study of the major minerals in bauxite: gibbsite, bayerite and (pseudo-)boehmite.

Journal of colloid and interface science

J Theo Kloprogge, Loc V Duong, Barry J Wood, Ray L Frost

Affiliations

  1. Inorganic Materials Research Program, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, Qld 4001, Australia. [email protected]

PMID: 16236302 DOI: 10.1016/j.jcis.2005.09.054

Abstract

Synthetic corundum (Al2O3), gibbsite (Al(OH)3), bayerite (Al(OH)3), boehmite (AlO(OH)) and pseudoboehmite (AlO(OH)) have been studied by high resolution XPS. The chemical compositions based on the XPS survey scans were in good agreement with the expected composition. High resolution Al2p scans showed no significant changes in binding energy, with all values between 73.9 and 74.4 eV. Only bayerite showed two transitions, associated with the presence of amorphous material in the sample. More information about the chemical and crystallographic environment was obtained from the O1s high resolution spectra. Here a clear distinction could be made between oxygen in the crystal structure, hydroxyl groups and adsorbed water. Oxygen in the crystal structure was characterised by a binding energy of about 530.6 eV in all minerals. Hydroxyl groups, present either in the crystal structure or on the surface, exhibited binding energies around 531.9 eV, while water on the surface showed binding energies around 533.0 eV. A distinction could be made between boehmite and pseudoboehmite based on the slightly lower ratio of oxygen to hydroxyl groups and water in pseudoboehmite.

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