Journal article
The ageing of alumina hydrolysates synthesized from sec-butoxyaluminium(III)
Journal of Materials Chemistry, Vol.11(6), pp.1681-1686
2001
Abstract
A combination of X-ray diffraction, thermal analysis and Raman spectroscopy was employed to characterise the ageing of alumina hydrolysates synthesised from the hydrolysis of anhydrous tri-sec-butoxyaluminium(III). X-Ray diffraction showed that the alumino-oxy(hydroxy) hydrolysates were pseudoboehmite. For boehmite the lamellar spacings are in the b direction and multiple d(020) peaks are observed for the un-aged hydrolysate. After 4 h of ageing, a single d(020) peak is observed at 6.53 Ã…. Thermal analysis showed five endotherms at 70, 140, 238, 351 and 445 °C. These endotherms are attributed to the dehydration and dehydroxylation of the boehmite-like hydrolysate. Raman spectroscopy shows the presence of bands for the washed hydrolysates at 333, 355, 414, 455, 475, 495, 530 and 675 cm-1. These bands are attributed to pseudoboehmite. Ageing of the hydrolysates results in an increase in the crystallite size of the pseudoboehmite.
Details
- Title
- The ageing of alumina hydrolysates synthesized from sec-butoxyaluminium(III)
- Authors
- W N Martens (Author) - Queensland University of TechnologyR L Frost (Author) - Queensland University of TechnologyJohn R Bartlett (Author) - Australian Nuclear Science and Technology Organisation Materials DepartmentJ T Kloprogge (Author) - Queensland University of Technology
- Publication details
- Journal of Materials Chemistry, Vol.11(6), pp.1681-1686
- Publisher
- Royal Society of Chemistry (R S C) Publications
- Date published
- 2001
- DOI
- 10.1039/B010119M
- ISSN
- 0959-9428
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99449070902621
- Output Type
- Journal article
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