The Effects of Pulse Shape on the Selectivity and Production Rate in Non-oxidative Coupling of Methane by a Micro-DBD Reactor

Abstract The conversion of methane to ethylene has been investigated in a micro-DBD reactor with electrodes containing charge injector parts and excited negatively nano-second pulse voltage superimposed on positive dc voltage. effect changing the characteristics pulsed such as rise time (5–7 ns), total width (12–14 fall ns) generation rate products selectivity plasma studied. kinetic model includes twenty species (electron, ions, radicals, neutrals). results showed that change input shape changes neutral products. during on-time significantly changed instant C 2 H 4 selectivity. With increasing times decreases, while hydrogen increases. Results also electron reactions are dominant channels on-time, they had lower contributions progress off-time process this period is mainly governed by radical reactions.