Supported Layered Double Hydroxide-Related Mixed Oxides and Their Application in the Total Oxidation of Volatile Organic Compounds

0363022 - ÚCHP 2012 RIV NL eng J - Journal Article
Kovanda, F. - Jirátová, Květa
Supported Layered Double Hydroxide-Related Mixed Oxides and Their Application in the Total Oxidation of Volatile Organic Compounds.
Applied Clay Science. Roč. 53, č. 2 (2011), s. 305-316. ISSN 0169-1317. E-ISSN 1872-9053
R&D Projects: GA ČR GAP106/10/1762; GA ČR GA106/09/1664
Institutional research plan: CEZ:AV0Z40720504
Keywords : layered double hydroxides * hydrothermal reaction * mixed oxides
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 2.474, year: 2011

Structured mixed oxide catalysts were prepared by the calcination of layred double hy/droxides (LDHs) deposited on Al2O3/Al supports (anodized aluminum foil). The deposition of LDH precursors on the support was carried out under hydrothermal conditions at 140 °C in aqueous solutions of Ni, Co, Cu, and Mn nitrates. An increased pH of the solutions enhanced the formation of LDH phases. After heating at 500 °C, spinel-like and/or NiO-like oxides were detected in the supported mixed oxides. Among the supported catalysts, the Ni-Cu-(Mn)-Al mixed oxide was the most active in the total oxidation of ethanol. Increasing the pH of solutions used during the hydrothermal deposition resulted in improved catalytic activity and selectivity of the supported mixed oxides.
Permanent Link: http://hdl.handle.net/11104/0199151