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常温常压下 ,研究了在脉冲电晕等离子体条件下CO2 的转化以及添加气H2 对CO2 转化的影响。分别考察了V(H2 ) /V(CO2 )、放电电压峰值、放电频率以及功率对CO2 转化的影响。结果表明 :在脉冲电晕等离子体作用下CO2 转化为CO和O2 ,另有少量积炭产生 ;引入H2 后 ,CO2 的转化率和产物CO的选择性均明显高于纯CO2 时的情况 ,同时积炭减少。而且随着H2 /CO2 比值增加 ,CO2 转化率、CO选择性及产率升高 ;随着脉冲电压峰值、放电频率的升高 ,CO2 转化率、CO产率增大 ,CO选择性略有降低。随着注入功率的增加 ,CO2 转化率升高 ,CO产率增大。另外还对脉冲放电等离子条件下的CO2 活化与转化机理进行了探讨。
Under normal temperature and pressure, the effects of CO2 conversion on H2 gas under pulsed corona plasma and H2 addition were studied. The effects of V (H2) / V (CO2), peak discharge voltage, discharge frequency and power on CO2 conversion were investigated. The results show that CO 2 and CO 2 are converted to CO and O 2 respectively by pulsed corona plasma, and a small amount of coke is produced. After the introduction of H2, the conversion of CO 2 and the selectivity of CO are obviously higher than that of pure CO 2, Coke reduction. With the increase of H2 / CO2 ratio, the CO2 conversion, CO selectivity and yield increased. With the increase of pulse voltage and discharge frequency, the conversion of CO2 and the yield of CO increased while the selectivity of CO decreased slightly . With the increase of injection power, CO2 conversion rate increased and CO yield increased. In addition, the mechanism of CO2 activation and transformation under pulsed discharge plasma conditions was also discussed.