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Conversion of CH4, steam and O_2 to syngas and hydrocarbons via dielectric barrier discharge

Journal of Natural Gas Chemistry 2009年第1期18卷 94-97页

作者： baowei wang xu zhang yongwei liu genhui xu Key Laboratory for Green Chemical Technology of the Ministry qf Education School qf Chemical Engineering and Technology. Tianjin University Tianjin 300072 China

The conversion of CH4 with oxygen and steam in a dielectric barrier discharge （DBD） was studied in the paper to discuss the effects of different factors, such as the content of feed-in gas, the applied voltage and frequency. The results showed that a lower ratio of CH4 to O2 always resulted in a higher conversion of CH4. When it was 2, the conversion reached 32.43% without steam introduced into the system. The main effect of steam was increasing the selectivity to CO. The reaction was accelerated and the selectivities to CO and hydrocarbons were enhanced by increasing the applied voltage. It was also observed that a higher frequency led to a lower current and then restrained the reaction.

关键词： methane steam oxygen dielectric barrier discharges plasma

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Conversion of Methane by Steam Reforming Using Dielectric-barrier Discharg

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Chinese Journal of Chemical Engineering 2009年第4期17卷 625-629页

作者：张旭王保伟刘永卫许根慧 Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering Technology Tianjin University Tianjin 300072 China

Conversion of methane by steam reforming was carried out by means of dielectric-barrier discharge.A systemic procedure was employed to determine the suitable experimental *** was found that one of the plasma generators can match the system best.A higher power input can always bring a higher conversion,but the selectivity to C2H6 decreased from 52.48% to 39.43% as the power increased from 20W to *** discharge distance was 4mm,selectivities to almost all main products reached the *** inner electrode made of stainless steel and the outer electrode with aluminum foil were one of the best options which can obviously enhance the conversion of methane.A larger flow rate always resulted in a lower conversion of *** the most time,19.93% steam promoted conversion of methane.

关键词： methane steam dielectric-barrier discharge plasma

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