【摘 要】
：
低温等离子体在CO2催化转化方面具有广阔的应用前景,成为国内外的研究热点.常用的电弧、微波或介质阻挡放电应用于CO2转化时通常处于电弧或丝状放电状态,难以调控其电学参数,
【机 构】
：
西安交通大学电气工程学院电力设备电气绝缘国家重点实验室,西安710049
论文部分内容阅读
低温等离子体在CO2催化转化方面具有广阔的应用前景,成为国内外的研究热点.常用的电弧、微波或介质阻挡放电应用于CO2转化时通常处于电弧或丝状放电状态,难以调控其电学参数,限制了转化机理的深入研究.为此,提出一种纳秒脉冲激励的获得板-板裸电极下CO2/He可调均匀放电的方法,通过对电学参数的测量,发现CO2体积分数越高,脉冲重复频率(pulse repetition frequency, PRF)越低,稳定放电电压就越高.利用放电图像和光谱探究了不同放电条件对放电稳定性的影响机制,结果显示稳定放电具有辉光放电的特征,后续伴随类汤森放电的余辉.进一步利用特征谱线强度比值r(O2/He)以及CO(B1∑→A1Π)谱带相对强度,分别分析验证了CO2体积分数对放电的影响途径,以及CO2/He在重复频率纳秒脉冲下放电的记忆效应.
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