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研究了在微波等离子体下 Ｃ Ｏ２ 氢化转化制低碳烃。实验结果表 明： Ｃ Ｏ２ 的 加氢反应在微波等离子体下可以制得甲烷和 Ｃ２ 烃， 其中甲烷和乙炔是主要产物； 产物中甲烷的摩百分含量随着微波输入功率的降低和 ｎ（ Ｈ２） ／ ｎ （ Ｃ Ｏ２） 值的增加而增大， 生成的乙炔则和甲烷相反。反应中有少量的乙烷和微量的乙烯生成； 没有检测到含氧有机化合物的存在。用静电悬浮双探针法测定了 等离子体反应中的电子温 度、能量和电 子密度。运用自由基反应理论解释了产物的分布以及反应条件的变化对产物组成的影响。
Hydrogenation of C O2 to lower hydrocarbons under microwave plasma was studied. The experimental results show that methane and C2 hydrocarbons can be obtained under the microwave plasma by hydrogenation reaction of C O2, of which methane and acetylene are the main products. The molar percentage of methane in the product decreases with the decrease of microwave input power and n (H2 ) / N (C O2) increases, the acetylene generated is the opposite of methane. A small amount of ethane and traces of ethylene were formed during the reaction; no oxygen-containing organic compounds were detected. Electron temperature, energy and electron density in plasma reaction were measured by electrostatic levitation double probe method. The radical reaction theory was used to explain the influence of the product distribution and the reaction conditions on the product composition.