Possible role of nanobubbles in the pulsed plasma production of hydrogen

IF 8.1 2区 工程技术 Q1 CHEMISTRY, PHYSICAL International Journal of Hydrogen Energy Pub Date : 2024-12-03 DOI:10.1016/j.ijhydene.2024.11.295
L. Bardos , H. Baránková
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Abstract

Submerged dc plasma generated by nanosecond pulses in ethanol and methanol mixtures with water confirmed efficient production of the hydrogen synthesis gas H2 + CO. The comparison of ethanol and methanol was made for their 35% contents in water. The methanol electrolyte exhibited about 25% more efficient production of synthesis gas compared with ethanol. Tests with 9 ns 9 kV negative dc pulses at the average power of 10 W confirmed production of up to 0.5 l/min of the synthesis gas with over 65% content of H2. In both electrolytes the experiments indicated important role of small gas bubbles in the process. The bubbles were evidently generated by very short streamers formed during the dc pulses. The extraordinary properties of small bubbles, particularly those with submicron sizes, could explain the efficient production of the hydrogen rich gas.
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纳米气泡在脉冲等离子体产生氢中的可能作用
用纳秒脉冲在乙醇和甲醇水溶液中产生的直流浸没等离子体,证实了氢气合成气H2 + CO的有效生成。乙醇和甲醇在水中的含量为35%时进行了比较。与乙醇相比,甲醇电解质的合成气生产效率提高约25%。在平均功率为10 W的9 ns 9 kV负直流脉冲下进行的试验证实,H2含量超过65%的合成气产量高达0.5 l/min。在这两种电解质中,实验表明了小气泡在过程中的重要作用。这些气泡明显是由直流脉冲中形成的极短流线产生的。小气泡的非凡特性,尤其是那些亚微米大小的气泡,可以解释富氢气体的高效生产。
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来源期刊
International Journal of Hydrogen Energy
International Journal of Hydrogen Energy 工程技术-环境科学
CiteScore
13.50
自引率
25.00%
发文量
3502
审稿时长
60 days
期刊介绍: The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.
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