Plasma-catalytic reforming of methane in AC microsized gliding arc discharge: Effects of input power, reactor thickness, and catalyst existence

被引:64
|
作者
Rueangjitt, Nongnuch [1 ]
Sreethawong, Thammanoon [1 ,2 ]
Chavadej, Sumaeth [1 ,2 ]
Sekiguchi, Hidetoshi [3 ]
机构
[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Ctr Petr Petrochem & Adv Mat, Bangkok 10330, Thailand
[3] Tokyo Inst Technol, Dept Chem Engn, Meguro Ku, Tokyo 1528552, Japan
关键词
Non-thermal plasma; Gliding arc discharge; Microreactor; Methane conversion; DIELECTRIC-BARRIER DISCHARGES; PARTIAL OXIDATION; NONTHERMAL PLASMA; PULSED DISCHARGE; CORONA DISCHARGE; LOW-TEMPERATURE; HYBRID REACTION; SYNTHESIS GAS; NATURAL-GAS; CONVERSION;
D O I
10.1016/j.cej.2009.10.009
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A new design of a microsized gliding arc discharge reactor was preliminarily investigated for the reforming of methane to various useful products. In methane reforming by the gliding arc (GA) microreactor under ambient conditions, hydrogen and acetylene were dominantly produced, with high selectivities of similar to 75% and similar to 70-90%, respectively, which were much higher than those in conventional GA reactors because of the high power density and the extremely short residence time of the GA microreactor, as compared to conventional GA reactors. Small amounts of other products (including ethylene, ethane, butadiene, and coke) were also formed. The results showed that the methane conversion strongly depended on input power and reactor thickness. A Ni-loaded porous alumina-silica catalyst, prepared by wet impregnation, was used to investigate the catalytic effect on the microreactor performance for methane reforming. A considerable enhancement of methane conversion, but not hydrogen and other product selectivities, was achieved in the combined plasma-catalytic system. Furthermore, heating the surface of the Ni-loaded catalyst brought about a significant change in product selectivity, but not methane conversion. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:874 / 880
页数:7
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