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Formation of Layered Double Hydroxides on Alumina Surface in Aqueous Solutions Containing Divalent Metal Cations
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SYSNO ASEP 0333297 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Formation of Layered Double Hydroxides on Alumina Surface in Aqueous Solutions Containing Divalent Metal Cations Title Tvorba LDH na povrchu aluminy v roztocích obsahujících divalentní kovové ionty Author(s) Kovanda, F. (CZ)
Mašátová, P. (CZ)
Novotná, P. (CZ)
Jirátová, Květa (UCHP-M) RID, ORCID, SAISource Title Clays and Clay Minerals. - : Springer - ISSN 0009-8604
Roč. 57, č. 4 (2009), s. 425-432Number of pages 8 s. Language eng - English Country US - United States Keywords deposition ; layered double hydroxides ; supported mixed oxides Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA104/07/1400 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000271401600003 DOI 10.1346/CCMN.2009.0570403 Annotation A formation of layered double hydroxides (LDHs) on an Al2O3/Al support prepared by anodic oxidation of aluminum foil was studied in diluted aqueous solutions of Co, Mn, and/or Ni nitrates. The LDH deposition was carried out under hydrothermal conditions at 80 – 180 °C for time ranging from 8 to 168 hours. The LDH phase was formed after long-term deposition (3 – 7 days) at 120 – 160 °C and only a slight incorporation of Mn into the deposited LDHs was found. Ni cations when present in the solution were preferentially incorporated into the LDH phase; a homogeneous layer was formed, with single platy crystals oriented perpendicularly towards the support. After calcination at 500 °C, the products formed on Al2O3/Al support exhibited worse reducibility in comparison with mixed oxides obtained by thermal decomposition of coprecipitated LDHs. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2010
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