Titania Supported Co-Mn-Al Oxide Catalysts in Total Oxidation of Ethanol

0376086 - ÚCHP 2012 RIV NL eng J - Journal Article
Ludvíková, Jana - Jirátová, Květa - Klempa, Jan - Böhmová, Vlasta - Obalová, L.
Titania Supported Co-Mn-Al Oxide Catalysts in Total Oxidation of Ethanol.
Catalysis Today. Roč. 179, č. 1 (2012), s. 164-169. ISSN 0920-5861. E-ISSN 1873-4308
R&D Projects: GA ČR GAP106/10/1762; GA ČR GD203/08/H032
Institutional research plan: CEZ:AV0Z40720504; CEZ:AV0Z30130516
Keywords : mixed oxide catalysts * voc oxidation * titania
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 2.980, year: 2012

Catalytic activity of the Co-Mn-Al mixed oxide catalyst (Co:Mn:Al molar ratio of 4:1:1) supported over titania was examined in total oxidation of ethanol. The prepared catalysts were characterized by chemical analysis (AAS), surface area measurements, temperature programmed techniques (TPR, TPD). In ethanol oxidation, the catalysts activity gradually increased with increasing active phase content. Low concentration of Co-Mn-Al oxides in the catalyst negatively affected formation of reaction byproducts: carbon monoxide production steeply increased when Co+Mn metals concentration were lower than 5 wt %. On the other hand, formation of the second main reaction intermediate, acetaldehyde was limited, when acidity of the catalyst was not high, i.e. concentration of Co-Mn metals over titania was low.
Permanent Link: http://hdl.handle.net/11104/0208583