Influence of Peptization and Ethanol Washing on the Pore-Structure Evolution of Sol-Gel-Derived Alumina Catalyst Supports

Nair, Jalajakumari and Nair, Padmakumar and Ommen van, Jan G. and Ross, Julian R.H. and Burggraaf, Anthonie J. and Mizukami, Fujio (1998) Influence of Peptization and Ethanol Washing on the Pore-Structure Evolution of Sol-Gel-Derived Alumina Catalyst Supports. Journal of the American Ceramic Society, 81 (10). pp. 2709-2712. ISSN 0002-7820

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Abstract:	Alkoxide-derived boehmite precipitates were subjected to different post-precipitation treatments to obtain a peptized sol, an unpeptized slurry, and an ethanol-washed gel precipitate. These materials were dried further to obtain the corresponding gels. Changes in the surface area, porosity, and pore size with temperature and the phase-transformation behavior from gamma-alumina to alpha-alumina were studied using X-ray diffractometry, differential scanning calorimetry, and physical adsorption/desorption measurements. Gels that were obtained from the peptized sol retained the lowest porosity, in comparison to the ethanol-washed gel and the gel that was prepared from the aqueous slurry.
Item Type:	Article
Copyright:	© 1998 WileyInterscience
Faculty:	Management and Governance (SMG)
Research Group:	Knowledge intensive entrepreneurship, strategic market oriented and International management (NIKOS)
Link to this item:	http://purl.utwente.nl/publications/58437
Official URL:	http://dx.doi.org/10.1111/j.1151-2916.1998.tb02681.x
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