Valorisation chimique du mèthane par plasmas micro-ondes

Abstract

The conversion of methane in a direct microwave plasma was investigated at pressures ranging from 4 to 28 Torr in a tubular flow reactor located in a parallelepipedic Moreau cavity. The main purpose of this work was the determination of the products obtained by methane conversion, especially C2 hydrocarbons. The reaction products were analysed by gas phase chromatography. The influence of various reaction parameters (residence time, flow, pressure, power...) was studied. The experimental results showed that substantial yields in C2 hydrocarbons could be obtained. Our experimental results are compared to those obtained by other processes, especially oxidative coupling and thermal coupling, and also to those obtained by other authors using microwave techniques.