脉冲介质阻挡放电等离子体催化CH<sub>4</sub>直接转化

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Abstract In this paper, plasma catalytic reforming of CH₄ is carried out by both microsecond- pulse and nanosecond-pulse dielectric barrier discharges (DBDs). Characteristics of DBD plasma for microsecond-pulse and nanosecond-pulse had been compared. Effects of pulse repetition rate, CH₄ flow rate and input power on the convention rate of CH₄ and distribution of gaseous products are investigated. Moreover, the corresponding selection of chemical reaction paths is analyzed. The results show that main parts of the gaseous products are H₂ and C₂H₆. The conversion rate of CH₄ and the yield of hydrogen increase with the pulse repetition rate, but they decrease with the CH₄ flow rate. Furthermore, the conversion rate of CH₄ and the yield of hydrogen are high for microsecond-pulse DBD when the pulse repetition rate and the CH₄ flow rate are fixed. The energy efficiency in the case of nanosecond-pulse DBD is higher than that in the case of microsecond-pulse DBD. In addition, coking and liquid hydrocarbons appear on the quartz tube and inner electrode at the conditions of high pulse repetition rate and low CH₄ flow rate, leading to the reduction of C&H balance. The selectivities of H₂ and C₂H₆ decreases with the increase of the input power in the case of microsecond-pulse DBD, while they increase with the input power in the case of nanosecond-pulse DBD.

Key words： Nanosecond pulsed discharge microsecond pulsed discharge dielectric barrier discharge methane conversion hydrogen production rate

Received: 03 June 2016 Published: 08 February 2017

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O461

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	Articles by authors
	Gao Yuan
	Zhang Shuai
	Liu Feng
	Wang Ruixue
	Wang Tielin
	Shao Tao

Cite this article:

Gao Yuan,Zhang Shuai,Liu Feng等. Plasma Enhanced CH₄ Direct Conversion in Pulsed Dielectric Barrier Discharges[J]. Transactions of China Electrotechnical Society, 2017, 32(2): 61-69.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I2/61

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