Direct conversion of methane to acetylene or syngas at room temperature using non-equilibrium pulsed discharge
Direct conversion of methane to acetylene or syngas at room temperature using non-equilibrium pulsed discharge
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DOI：
10.1016/s0016-2361(03)00038-3
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发表时间：
2003-07-01
期刊：
影响因子：
7.4
通讯作者：
Fujimoto, K
中科院分区：
文献类型：
--
作者：
Kado, S;Urasaki, K;Fujimoto, K
研究了常温常压条件下非平衡脉冲放电将甲烷非催化直接转化为有价值的产品。乙炔的选择性为 95%，甲烷转化率为 52%。氧气、二氧化碳和蒸汽的添加显着有助于抑制积碳并产生一氧化碳和乙炔。甲烷转化率随着脉冲频率的增加而增加，而产物选择性几乎保持恒定。选择性取决于原料气的组成。考察了氧分压的影响，发现脉冲放电能够通过甲烷部分氧化产生合成气。在CH4/O-2=25/25 cm(3) min(-1)、间隙距离10 min、频率45 Hz条件下，一氧化碳选择性为79%，甲烷转化率为76%。 (C) 2003 Elsevier Science Ltd. 保留所有权利。
Non-catalytic direct conversion of methane to valuable products was studied using non-equilibrium pulsed discharge under the conditions of ambient temperature and atmospheric pressure. Acetylene was produced with 95% selectivity and 52% methane conversion. An addition of oxygen, carbon dioxide and steam contributed significantly to suppress the carbon deposition and produced carbon monoxide as well as acetylene. Methane conversion increased with an increase in the pulse frequency while the product selectivity remained almost constant. The selectivity depended on the composition of the feed gas. The effect of the partial pressure of oxygen was examined, and it was found that the pulsed discharge would be able to produce synthesis gas by partial oxidation of methane. Carbon monoxide selectivity of 79% with methane conversion of 76% was obtained under the conditions of CH4/O-2 = 25/25 cm(3) min(-1), gap distance of 10 min and the frequency of 45 Hz. (C) 2003 Elsevier Science Ltd. All rights reserved.