Mixed oxides of transition metals as catalysts for total ethanol oxidation
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Jana Ludvíková
,
Květa Jirátová
Abstract
Oxides of transition metals could be suitable alternatives to catalysts based on noble metals in the oxidation processes used for the abatement of volatile organic compounds. Mixed oxides of transition metals can exhibit good efficiency and thermal stability, as well as being inexpensive. In this work, oxide catalysts containing various combinations of Cu, Co, Ni, Mn, and Al, grained or supported on oxidised aluminium foil Al2O3/Al, were studied in terms of their chemical and physical properties, including their chemical composition, porous structure, phase composition, reducibility, and activity in total ethanol oxidation. Ternary co-precipitated catalysts in the form of grains obtained from layered double hydroxide-like precursors were highly active, especially those containing manganese. Deposition of the selected precursors on an anodised aluminium foil-support afforded less active catalysts, mainly because the required metal molar ratios were not achieved, and insufficient amounts of metals were deposited. However, by controlling the preparation conditions (pH), higher loading of active components and higher catalytic activity were obtained.
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© 2011 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
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- Investigation of kinetics of anaerobic digestion of Canary grass
- Extractive distillation modeling of the ternary system 2-methoxy-2-methylpropane-methanol-butan-1-ol
- Agitation of a gas-solid-liquid system in a vessel with high-speed impeller and vertical tubular coil
- Experimental analysis of the hydrodynamics of a three-phase system in a vessel with two impellers
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Articles in the same Issue
- Mathematical model of aerobic stabilization of old landfills
- Investigation of kinetics of anaerobic digestion of Canary grass
- Extractive distillation modeling of the ternary system 2-methoxy-2-methylpropane-methanol-butan-1-ol
- Agitation of a gas-solid-liquid system in a vessel with high-speed impeller and vertical tubular coil
- Experimental analysis of the hydrodynamics of a three-phase system in a vessel with two impellers
- Influence of the ionic form of a cation-exchange adsorbent on chromatographic separation of galactooligosaccharides
- Mixed oxides of transition metals as catalysts for total ethanol oxidation
- Speciation of heavy metals in sewage sludge after mesophilic and thermophilic anaerobic digestion
- Oxidation of ammonia using modified TiO2 catalyst and UV-VIS irradiation
- Antioxidant potential and authenticity of some commercial fruit juices studied by EPR and IRMS
- Etching and recovery of gold from aluminum substrate in thiourea solution
