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

作　　者：王康军 李小松 王惠 石川 徐勇 朱爱民 

机构地区：[1]Laboratory of Plasma Physical Chemistry,Dalian University of Technology,Dalian 116024,China [2]State Key Laboratory of Materials Modification by Laser,Ion and Electron Beams Dalian University of Technology,Dalian 116024,China Laboratory of Plasma Physical Chemistry,Dalian University of Technology,Dalian 116024,China [3]State Key Laboratory of Materials Modification by Laser,Ion and Electron Beams,Dalian University of Technology,Dalian 116024,China [4]State Key Laboratory of Materials Modification by Laser,Ion and Electron Beams,Dalian University of Technology,Dalian 116024,China Laboratory of Plasma Physical Chemistry,Dalian University of Technology,Dalian 116024,China

出　　处：《Plasma Science and Technology》2008年第5期600-604,共5页等离子体科学和技术（英文版）

基　　金：National Natural Science Foundation of China(Nos.10775028,20573014);the Program for New Century Excellent Talents in Universities(NCET-06-0282);the FokYing Tung Education Foundation of China(No.94015)

摘　　要：Oxygen-free conversion of methane to ethylene was investigated in a two-stage plasma-followed-by-catalyst （PFC） reactor. In the absence of catalyst, pulsed spark discharges and pulsed corona discharges were compared for methane conversion. The results showed that methane was mainly converted to acetylene, but pulsed spark discharges exhibited distinct advantages over the pulsed corona discharges in methane conversion. Thereby, pulsed spark discharges were employed and followed by Ag-Pd/SiO2 catalyst for achieving ethylene as a target product in the PFC reactor. Using the PFC reactor, a steady single-pass ethylene yield of 57% was obtained at a rate of methane conversion of 74%.Oxygen-free conversion of methane to ethylene was investigated in a two-stage plasma-followed-by-catalyst （PFC） reactor. In the absence of catalyst, pulsed spark discharges and pulsed corona discharges were compared for methane conversion. The results showed that methane was mainly converted to acetylene, but pulsed spark discharges exhibited distinct advantages over the pulsed corona discharges in methane conversion. Thereby, pulsed spark discharges were employed and followed by Ag-Pd/SiO2 catalyst for achieving ethylene as a target product in the PFC reactor. Using the PFC reactor, a steady single-pass ethylene yield of 57% was obtained at a rate of methane conversion of 74%.

关 键 词：methane conversion ETHYLENE pulsed spark discharges PLASMA CATALYST 

分 类 号：TQ221.211[化学工程—有机化工]