Decomposition of carbon dioxide by recombining hydrogen plasma with ultralow electron temperature
Decomposition of carbon dioxide by recombining hydrogen plasma with ultralow electron temperature
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DOI：
10.7567/apex.11.066202
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发表时间：
2018-05
影响因子：
2.3
通讯作者：
M. Yamazaki;S. Nishiyama;K. Sasaki
中科院分区：
文献类型：
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作者：
M. Yamazaki;S. Nishiyama;K. Sasaki
我们研究了在低压重组氢等离子体与电子温度在0.15和0.45 eV之间，电子碰撞解离是可以忽略不计的CO2的分解速率系数。通过使用这种超低温等离子体，我们清楚地观察到通过振动激发态的分解过程。在超低温等离子体中，整个反应（CO2 + e →产物）的速率系数为1.5 × 10−17 m3/s，比电子温度为4 eV的电离等离子体中的分解速率系数2 × 10−18 m3/s大10倍。
We examined the rate coefficient for the decomposition of CO2 in low-pressure recombining hydrogen plasmas with electron temperatures between 0.15 and 0.45 eV, where the electron-impact dissociation was negligible. By using this ultralow-temperature plasma, we clearly observed decomposition processes via vibrational excited states. The rate coefficient of the overall reaction, CO2 + e → products, was 1.5 × 10−17 m3/s in the ultralow-temperature plasma, which was 10 times larger than the decomposition rate coefficient of 2 × 10−18 m3/s in an ionizing plasma with an electron temperature of 4 eV.