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The Laboratory of Industrial Chemistry performs fundamental research in the area of heterogeneous catalysis and aims to develop catalysts based on mechanistic insight. The scientific challenge is the elucidation of the reactions on the atomic level and their interplay with the complex surface chemistry of heterogeneous catalysts, which usually consist of many phases and components, often present as nanoparticles or as X-ray amorphous layers.

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Catalyst‐enhanced plasma oxidation of n‐butane over α‐MnO2 in a temperature‐controlled twin surface dielectric barrier discharge reactor

A twin surface dielectric barrier discharge is used for the catalyst‐enhanced plasma oxidation of 300 ppm n‐butane in synthetic air. Plasma‐only operation results in the conversion of n‐butane into CO and CO2. Conversion is improved by increasing the temperature of the feed gas, but selectivity shifts to undesired CO. α‐MnO2 is used as a catalyst deposited on the electrodes by spray coating with a distance of 1.5 mm between the uncoated grid lines and the square catalyst patches to prevent the inhibition of plasma ignition. The catalyst strongly influences selectivity, reaching 40% conversion and 73% selectivity to CO2 at a specific energy density of 390 J·L−1 and 140°C, which is far below the onset temperature of thermocatalytic n‐butane conversion.

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Is supplementing
Plasma Source Name
Plasma Source Application
Plasma Source Specification
English (United States)
Plasma Medium Name
Plasma Medium Properties
10 l/min Air with 300 ppm n-Butane
Contact Name
M. Muhler
Contact Email
Public Access Level
Funding Agency

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