Ethanol Total Oxidation Over Calcined Layered Double Hydroxides Modified with Organic Components

0392365 - ÚCHP 2014 RIV HR eng J - Journal Article
Ludvíková, Jana - Jirátová, Květa - Klempa, Jan - Raabová, H. - Zapivovarski Votipka, Z. - Kovanda, F.
Ethanol Total Oxidation Over Calcined Layered Double Hydroxides Modified with Organic Components.
Kemija u industriji. Roč. 62, 5-6 (2013), s. 137-146. ISSN 0022-9830
R&D Projects: GA ČR GAP106/10/1762
Institutional support: RVO:67985858
Keywords : mixed oxides * Pluronic 123 * VOC oxidation
Subject RIV: CI - Industrial Chemistry, Chemical Engineering

Coprecipitation of Co, Mn, and Al nitrates by a solution of Na2CO3 and NaOH in the presence of Pluronic 123 led to layered double hydroxide (LDH) precursors with hydrotalcite-like structure. Their calcination gave spinel-type mixed oxides; the presence of organic template increased both BET and mesopore surface areas of the calcined products. TPR profiles of the samples modified with Pluronic 123 exhibited a shift of reduction maxima to lower temperatures, similarly as increasing sodium content in the catalysts. However, though the physical-chemical properties of Co-Mn-Al mixed oxides and their catalytic activity in ethanol oxidation were slightly improved, the changes evolved by the presence of Pluronic 123 during precipitation of LDH precursors were rather small.
Permanent Link: http://hdl.handle.net/11104/0222315