在低温常压下 ,对脉冲电晕等离子体应用于乙烷脱氢反应进行了研究。考察了等离子体注入功率和添加气对反应的影响 ,并探讨了等离子体条件下乙烷脱氢反应的机理。研究结果表明 :乙烷在脉冲电晕等离子体中可发生转化反应 ,主要产物是乙炔。乙烷转化率和乙炔收率随等离子提功率增加不断提高。添加气二氧化碳的加入提高了乙烷转化率 ,当体系中CO2 浓度为 5 0 %时乙炔收率达到峰值。向反应体系中添加氢不仅促进了乙烷的转化 ,提高了乙炔选择性 ,且抑制了积碳的形成 Pulsed corona plasma was applied to the dehydrogenation of ethane at low temperature and pressure. The effects of plasma injection power and additive gas on the reaction were investigated. The mechanism of ethane dehydrogenation under plasma was also discussed. The results show that ethane can convert in pulsed corona plasma and the main product is acetylene. The conversion of ethane and the yield of acetylene increased with the increase of plasma extraction power. Addition of carbon dioxide gas increased the conversion of ethane. When the CO2 concentration in the system was 50%, the acetylene yield peaked. Addition of hydrogen to the reaction system not only promotes the conversion of ethane, improves the acetylene selectivity, and suppresses the formation of carbon deposits