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High surface area alpha-alumina preparation by using urban waste
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SYSNO ASEP 0341292 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title High surface area alpha-alumina preparation by using urban waste Author(s) Martín-Ruiz, M.M. (ES)
Pérez-Maqueda, L.A. (ES)
Cordero, T. (ES)
Balek, Vladimír (UACH-T)
Šubrt, Jan (UACH-T) SAI, RID
Murafa, Nataliya (UACH-T) RID, SAI
Pascual-Cosp, J. (ES)Source Title Ceramics International. - : Elsevier - ISSN 0272-8842
Roč. 35, č. 6 (2009), s. 2111-2117Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords alpha-alumina preparation ; surface area ; urban waste Subject RIV CA - Inorganic Chemistry CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000267387500002 DOI 10.1016/j.ceramint.2008.11.011 Annotation A new method for preparing high surface area a-alumina from urban waste is proposed. The method consists of the precipitation of a precursor that contains bohemite mixed with a linear polymer and subsequently the thermal decomposition of the precursor by heating in nitrogen and air to 1200 degrees C. The resulting a-alumina consists of nanocrystals of about 100 nm aggregated into larger particles with relatively high surface area (12 m(2) g(-1)) and a significant macropore volume of 0.545 cm(3) g. Methods of X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) were used to characterize microstructure of prepared materials. Results of differential thermal analysis, thermogravimetry and emanation thermal analysis characterized the thermal behaviour of alpha-alumina precursors. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2010
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