Total Oxidation of Ethanol and Dichloromethane over Ceria-Zirconia Mixed Oxides Doped with Platinum and Gold

0360173 - ÚCHP 2012 SK eng C - Konferenční příspěvek (zahraniční konf.)
Gaálová, Jana - Kaluža, Luděk - Topka, Pavel - Matějová, Lenka
Total Oxidation of Ethanol and Dichloromethane over Ceria-Zirconia Mixed Oxides Doped with Platinum and Gold.
Proceedings. Bratislava: Slovak Society of Chemical Engineering, 2011 - (Markoš, J.), s. 250. ISBN 978-80-227-3503-2.
[International Conference of Slovak Society of Chemical Engineering /38./. Tatranské Matliare (SK), 23.05.2011-27.05.2011]
Grant CEP: GA ČR GPP106/10/P019; GA MPO FR-TI1/059
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: oxidation * ethanol * dichloromethane
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
http://arl-repository.lib.cas.cz/nusl/UCHP-M/cav_un_epca-0360173_01.pdf

The Ce-Zr mixed oxides have been examined as catalysts and supports of platinum and gold for total oxidation of ethanol and dichloromethane in air. The catalytic activity was compared to the industrial catalysts HHC-5557 (0.3 wt. % Pt + Pd) and VOC-1544 (3 – 6 wt. % Cu + Mn). It was found that Pt and Au increased the activity of Ce-Zr mixed oxides in the oxidation of ethanol. Platinum catalysts exhibited higher activity in comparison with corresponding gold catalysts. The Pt catalysts showed 90 % conversion of ethanol at about 150 oC while the Au samples showed that at about 210 oC. Furthermore, the efficiency of our most active platinum catalyst was higher comparing to that of industrial catalyst with the same metal loading, platinum-palladium supported on alumina. In the oxidation of ethanol, Au catalysts proved a better selectivity to CO2 than their platinum analogues, even with relatively low metal loading (0.3 wt. %).
Trvalý link: http://hdl.handle.net/11104/0197795