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Mixed oxides obtained from Co and Mn containing layered double hydroxides: Preparation, characterization, and catalytic properties
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SYSNO ASEP 0040047 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Mixed oxides obtained from Co and Mn containing layered double hydroxides: Preparation, characterization, and catalytic properties Title Směsné oxidy z hydrotalcitů obsahujících Co a Mn: příprava, charakterizace a katalytické vlastnosti Author(s) Kovanda, F. (CZ)
Rojka, T. (CZ)
Dobešová, J. (CZ)
Machovič, V. (CZ)
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Obalová, L. (CZ)
Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Grygar, Tomáš (UACH-T)Source Title Journal of Solid State Chemistry. - : Elsevier - ISSN 0022-4596
Roč. 179, č. 3 (2006), s. 812-823Number of pages 12 s. Language eng - English Country US - United States Keywords layered double hydroxides ; hydrotalcite-like compounds ; thermal decomposition Subject RIV CA - Inorganic Chemistry R&D Projects GA104/04/2116 GA ČR - Czech Science Foundation (CSF) GA106/05/0366 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40320502 - UACH-T (2005-2011) AV0Z40720504 - UCHP-M (2005-2011) Annotation Thermal decomposition of prepared LDHs and formation of related mixed oxides were studied using high-temperature Xray powder diffraction and thermal analysis. A subsequent step is a complete decomposition of the layered structure to nanocrystalline spinel, the complete dehydration, and finally decarbonation of the mixed oxide phase. Spinel-type oxides were the primary crystallization products. Mg-containing primary spinels had practically empty tetrahedral cationic sites. A dramatic increase of the spinel cell size upon heating and analysis by Raman spectroscopy revealed a segregation of Co-rich spinel in Co-Mn and Co-Mn-Al specimens. These calcination products were tested as catalysts in the total oxidation of ethanol and decomposition of N2O. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2007
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