中文摘要：

为了研究氧等离子体对丙烯的活化和氧化作用，在室温和大气压下，以分子氧为氧化剂，采用介质阻挡放电方法进行了直接气相氧化丙烯生成环氧丙烷、丙醛等C3氧化产物反应的研究。实验考察了丙烯／氧气比值、介质阻挡放电频率及介质阻挡放电电压对丙烯／氧气转化反应的影响。结果表明：用介质阻挡放电法可转化丙烯和氧气选择性氧化生成环氧丙烷、丙醛、丙烯醛和丙酮等C3氧化产物，适当调节各相关参数可提高C3氧化产物的总收率。在介质阻挡放电电压为17．2kv、总反应气流速为160．8mL／min、介质阻挡放电频率为1．38kHz、φ（C3H6）／φ（O2）：1：200的条件下，得到了丙烯转化率、C3类氧化产物的总选择性及总收率分别为3．9％，63．6％和2．5％的结论。

英文摘要：

In order to discuss the role of oxygen plasma in the activation and gas phase oxidation of propylene, the plasma was obtained by applying dielectric barrier discharge to the mixture of oxygen and propylene at room temperature and atmospheric pressure. The effects of some main parameters on propylene/oxygen conversion reaction, such as the φ（C3 H6 ）/（O2）, the dielectric barrier discharge frequency as well as the dielectric barrier discharge voltage, were investigated. It is observed that, propylene and oxygen can be converted into C3 partial oxidation products （PO, propionaldehyde, acrolein and acetone） in gas phase oxidation, while the proper adjustment of the parameters above is able to rise the total yield of C3 oxidation products. When the dielectric barrier discharge voltage was 17.2 kV, the total flow rate was 160.8 mL/min, the discharge frequency was 1.38 kHz, and the φ（C3 HG ）/（O2 ） was 1 ： 200, the conclusion is drawn as follows： the conversion of propylene, the total selectivity and total yield of C3 partial oxidation products were 3.9%, 63.6% and 2.5%, respectively.