A study on the reaction mechanism of non-oxidative methane coupling in a nanosecond pulsed discharge reactor using isotope analysis

摘要: Abstract We present a study on the reaction pathways involved in non-oxidative methane coupling nanosecond pulsed discharge reactor using isotope analysis. Specifically, plasma-assisted reactions with isotopes, serving as tracers, are performed two ratios (CH4:D2 = 1:1 and CH4:D2 = 1:3) elevated pressures (up to 5 bar). Acetylene hydrogenation also tubular under conventional furnace heating simulate post plasma zone conditions. Depending pressure applied major product formed changes. At ambient pressure, acetylene is through thermally driven ethane gas phase followed by stepwise dehydrogenation of (C2H6 → C2H5 → C2H4 → C2H3 → C2H2). higher (>3 bar), via same sequence paths. However, bulk temperature attained when operating at overpressure activates ethylene catalyzed copper-based electrode reactor. These paths shift selectivity from pressures.