Methane conversion in homogeneous discharge at atmospheric pressure in Ar-CH 4 mixtures

Abstract

International audienceUV pre-ionized photo-triggered discharge reactor is used, its allows to work with an homogeneous plasma, a uniform electric field and a controllable deposition of electric energy in the plasma even at atmospheric pressure. The moderate values of the reduced electric field E/N, associated with the preceding properties, allows a 0D self-consistent physical and chemical modelling, without restrictive hypothesis on the physics of the energy deposition. Initial methane concentrations are in the range 250-1000 ppm at atmospheric pressure, chromatographic diagnostics are used to identify and quantify CH 4 and by-products