Partial oxidation of n-pentane to syngas and oxygenates in a dielectric barrier discharge reactor
Partial oxidation of n-pentane to syngas and oxygenates in a dielectric barrier discharge reactor
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DOI：
10.1016/j.fuel.2021.121814
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发表时间：
2022-01
期刊：
影响因子：
7.4
通讯作者：
Xuming Zhang;Yesheng Wenren;Jingqing Chen;Liancheng Zhang;Yuzhen Jin;Zhen Liu;H. Jin;Qi Liu-Qi-Li
中科院分区：
文献类型：
--
作者：
Xuming Zhang;Yesheng Wenren;Jingqing Chen;Liancheng Zhang;Yuzhen Jin;Zhen Liu;H. Jin;Qi Liu-Qi-Li
低温等离子体在汽油部分氧化生成清洁燃料方面具有很大潜力。然而，深度氧化产物和裂解产物的形成使等离子体对环境不友好。本文报道了模拟汽油(n-C5H12)部分氧化制合成气和含氧产物的反应。为此，采用了可分别控制背景温度和气体压力的介质阻挡放电反应器。我们发现n-C5H12的转化率随着本底温度的升高而增加，直到498K，然后由于放电功率的阻性损失，在523K时转化率降低。相反，含氧物的选择性和H2/CO值随着背景温度的升高而单调下降。结果表明，在498K时，n-C5H12的转化既依赖于热化学，又依赖于电子诱导化学，两者对反应的贡献基本相同，而产物的形成机理主要受热化学控制。强调了使用冷等离子体同时生产合成气和含氧物的好处。我们的结果可能为设计环保型等离子体重整器提供一种新的概念。
Nonthermal plasma has a great potential for the partial oxidation of gasoline to form cleaner fuels. However, the formation of deep oxidation products and cracking products makes plasma environmentally unfriendly. This paper reports the partial oxidation of simulated gasoline (n-C5H12) to syngas and oxygenated products. For this purpose, a dielectric barrier discharge reactor was used in which the background temperature and gas pressure could be individually controlled. We found that the conversion of n-C5H12increased with increasing background temperature until 498 K, then reduced at 523 K because of the resistive loss of discharge power. In contrast, the selectivity of oxygenates and the H2/CO value monotonously decreased with increasing background temperature. It was inferred that the conversion of n-C5H12depends on both the thermo-chemistry and the electron-induced chemistry, and their contribution to this process was almost the same at 498 K. In contrast, the mechanism of product formation was mainly controlled by thermo-chemistry. The benefits of using cold plasma to simultaneously produce syngas and oxygenates were highlighted. Our results may be used to develop a new concept for designing an environmentally friendly plasma reformer.