Formation of H2 and H2O2 in a Water-Spray Gliding Arc Nonthermal Plasma Reactor
Formation of H2 and H2O2 in a Water-Spray Gliding Arc Nonthermal Plasma Reactor
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DOI：
10.1021/ie402767f
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发表时间：
2010-06
影响因子：
4.2
通讯作者：
R. Burlica;K. Shih;B. Locke
中科院分区：
文献类型：
--
作者：
R. Burlica;K. Shih;B. Locke
本文测定了纯水在装有喷嘴的非热脉冲等离子体滑动弧反应器中H_2和H_2O_2的生成速率和能量产额。使用氩气载体时，H2和H2 O2的形成速率最高，最大能量产量分别为13和81 g/kWh。H2 O2和H2都用载气（空气和氮气）抑制，其中形成大量的硝酸盐。在目前的工作中，与氩气载气的H2和H2 O2的能量产额高于以前报道的微波等离子体，电晕，和AC滑动弧。H2的结果非常接近热力学限制的45%的理想淬灭极限，从而表明等离子体中水滴的存在通过增强自由基的淬灭和破坏所需分子产物的反应来增强能量产率。
The formation rates and energy yields of H2 and H2O2 from pure water exposed to a nonthermal pulsed plasma-gliding arc reactor equipped with a spray nozzle were determined. Both H2 and H2O2 formation rates were the highest with the argon carrier where the maximum energy yields were 13 and 81 g/kWh, respectively. Both H2O2 and H2 were suppressed with carrier gases (air and nitrogen) where significant amounts of nitrates are formed. The energy yields of H2 and H2O2 with the argon carrier gas in the present work are higher than previously reported microwave plasma, corona, and AC gliding arc. The results for H2 are very close to an ideal quenching limit of 45% of thermodynamic limitations, thereby suggesting that the presence of water droplets in the plasma enhance energy yield through enhanced quenching of radicals and reactions that destroy the desired molecular products.