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1059963 
Journal Article 
Plasma-catalytic methane conversion with carbon dioxide in dielectric barrier discharges 
Sentek, J; Krawczyk, K; Młotek, M; Kalczewska, M; Kroker, T; Kolb, T; Schenk, A; Gericke, KH; Schmidt-Szałowski, K 
2010 
Yes 
Applied Catalysis B: Environmental
ISSN: 0926-3373 
Elsevier BV 
94 
1-2 
19-26 
WOS:000274870000003 
The hybrid plasma-catalytic system was tested for the mixture of methane and CO sub(2) conversion at the pressure of 1.2 bar with the use of a dielectric barrier discharge (DBD) reactor powered at the frequency of 5.7-6 kHz. Three kinds of catalytic packing were examined: alumina ceramic carrier (Al sub(2)O sub(3)) and two catalysts, i.e. Ag/Al sub(2)O sub(3) and Pd/Al sub(2)O sub(3). The effects of temperature (120-290 degree C), [CO sub(2)]:[CH sub(4)] molar ratio in the inlet gas mixtures (CH sub(4) + CO sub(2) + Ar), gas flow rate, and specific energy on the conversion were studied. Hydrogen, carbon oxide, hydrocarbons (ethane, ethylene + acetylene fraction, propane, propylene, n-butane, and i-butane), and alcohols (methanol and ethanol) were identified in the outlet gas. Among the organic gaseous products, ethane was dominant over the entire parameter range under examination. Non-volatile products (carbon, macromolecular substances) formed a visible deposit on the quartz dielectric barrier and metal electrode surfaces. With the Pd/Al sub(2)O sub(3) catalyst, the overall methane conversion was 30-50% and the methane conversion to C2-C4 hydrocarbons reached 22%. 
Methane conversion; Carbon dioxide; Barrier discharge; Catalyst 
• Methanol (Non-Cancer)
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