National Repository of Grey Literature 5 records found  Search took 0.00 seconds. 
Deep Oxidation of Ethanol over Co-Mn-Al Mixed Oxides Supported on Pelletized Magnesia-Alumina: Role of Acid-base Properties.
Jirátová, Květa ; Balabánová, Jana ; Kovanda, F. ; Obalová, L.
In the present study, we applied the method of impregnation using acidic solution of metal salts in combination with a support having basic properties that could limit penetration of active components into the support pellets.
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Plný tet: SKMBT_C22016090211340 - Download fulltextPDF
Structured Heterogeneous Catalysts for Total Oxidation of Organic Compounds
Ludvíková, Jana
The report contains summary of preparation of structured catalytic systems, ceramic and metallic monoliths or ceramic foams, designated for total oxidation of volatile organic compounds. Various methods of depositing active phase on support are described. Also washcoating in order to obtain porous oxide layer, which is usually applied prior to active phase deposition, is included. Sol-gel method, suspension method or their combination are among the most frequent coating methods.
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Total Oxidation of Organic Compounds in Air over Oxide Catalysts
Ludvíková, Jana ; Jirátová, Květa ; Kovanda, F. ; Klempa, Jan
The aim of this work was investigation of the influence of various combinations of metals, Cu, Co, Ni, Mn or Al on properties of LDH (layered double hydroxides)-precursors and their calcined forms, examination of formation of these layered double hydroxides on a model support (anodized aluminum foil), and determination of catalytic activity of the calcined precursors in oxidation of ethanol as model compound.
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Aktivita směsných oxidů přechodných kovů nanesených na nosič Al2O3/Al při úplné oxidaci VOC
Jirátová, Květa ; Kovanda, F. ; Klempa, Jan ; Ludvíková, Jana ; Krúpa, L. ; Gaálová, Jana
The MII-(Mn)-Al and MII-Cu-(Mn)-Al LDH precursors (MII = Ni and/or Co) were deposited on Al2O3/Al support during hydrothermal reaction in aqueous solutions containing divalent metal cations. Only a slight incorporation of Mn into deposited solid was observed. The obtained LDH films consisted of thin platelet crystals oriented nearly perpendicularly to the support; their morphology did not change even after heating at 500 °C, when mixed oxides were formed. The deposited mixed oxides containing Cu showed reduction peaks at the lowest temperatures, and, from that reason, the Cu-containing catalysts, namely the Ni-Cu-(Mn)-Al sample was the most active in the total oxidation of ethanol.
Kalcinované Co(Mg)Al(Mn) prekursory připravené na bázi hydrotalcitů v totální oxidaci VOC
Mikulová, Zuzana ; Balabánová, Jana ; Kovanda, F. ; Bastl, Zdeněk ; Jirátová, Květa
Total oxidation of VOC proceeding in the presence of oxidation catalysts at relatively low reaction temperature (determined by catalysts activity) is an alternative route to eliminace VOC from air. Hydrotalcites could be promising materiál for oxidation catalysts as they lead, after calcination, to mixed oxides.The aim of our study was to reveal the effect of various Mg:Co:Al:Mn hydrotalcite-like compound molar ratio (MII/MIII being 2) on physical-chemical properties of resulting catalysts and thein aktivity in total oxidation of VOC.

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