Oxygen-Free Conversion of Methane to Ethylene in a Plasma-Followed-by-Catalyst (PFC) Reactor

摘要

Oxygen-free conversion of methane to ethylene was investigated in a two-stageplasma-followed-by-catalyst(PFC)reactor.In the absence of catalyst,pulsed spark dischargesand pulsed corona discharges were compared for methane conversion.The results showed thatmethane was mainly converted to acetylene,but pulsed spark discharges exhibited distinct advan-tages over the pulsed corona discharges in methane conversion.Thereby,pulsed spark dischargeswere employed and followed by Ag-Pd/SiO_2 catalyst for achieving ethylene as a target product inthe PFC reactor.Using the PFC reactor,a steady single-pass ethylene yield of 57% was obtainedat a rate of methane conversion of 74%.