Methane Conversion and Reforming by Nonthermal Plasma on Pins
Methane Conversion and Reforming by Nonthermal Plasma on Pins
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DOI：
10.1021/ie0202322
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发表时间：
2002-10
影响因子：
4.2
通讯作者：
Yun Yang
中科院分区：
文献类型：
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作者：
Yun Yang
引脚上的非热等离子体是指在大气压下工作的两个引脚电极、引脚对平面或多引脚配置之间产生的非热或非平衡等离子体。本文证明了在1 ~ 2 kHz交流电源下，非热等离子体在引脚上不仅可以产生电晕放电，还可以产生均匀辉光放电和伪辉光放电。电极结构和输入功率控制放电电流脉冲的幅度和持续时间。研究发现，甲烷直接非氧化转化的产物选择性取决于放电条件。辉光放电产生乙炔、乙烯和乙烷的量大致相等，而电晕放电主要选择性产生乙炔。在伪辉光放电中，可以通过输入比能量来控制产物的分布。较低比能输入时，产物分布与辉光放电时基本相同；较高比能输入时，产物分布与辉光放电时基本相同。
Nonthermal plasma on pins means nonthermal or nonequilibrium plasmas produced between two pin electrodes, pin-to-plane, or multipin configurations working at atmospheric pressure. In this paper, it is shown that nonthermal plasma on pins can produce not only the corona discharges but also the homogeneous glow discharge and pseudo glow discharge by using a 1−2 kHz ac power supply. The electrode configurations and input power control the amplitude and duration of the discharge current pulses. It is found that the discharge conditions determined the product selectivity in direct nonoxidative methane conversion. The glow discharge produces acetylene, ethylene, and ethane in approximately equal quantities, while the corona discharge is mainly selective to acetylene. In the pseudo glow discharge, the product distribution can be controlled by the specific energy input. With lower specific energy input, the product distribution is almost the same as that in glow discharge, while with higher specific energy input,...