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在低温常压条件下 ,研究了在无声放电反应器中以A型分子筛为催化剂从甲烷和二氧化碳合成烃和合成气 ,实现了在无声放电反应器中同时合成烃和合成气。实验在原料气流量 2 0 0～ 6 0 0ml/min、原料气甲烷和二氧化碳摩尔比 1/1～ 3/1及输入功率 10 0～ 5 0 0W的范围内进行。研究结果表明 ,低原料气流量有利于甲烷和二氧化碳的转化 ,而高原料气流量有利于烃的生成 ;原料气甲烷和二氧化碳摩尔比对制得合成气的H2 /CO摩尔比的影响最显著 ;甲烷和二氧化碳转化率及合成气和烃的产率均随输入功率的增加而提高。而所研究的范围内 ,当原料气流量为 2 0 0ml/min、甲烷和二氧化碳摩尔比为 1/1、输入功率为 5 0 0W时 ,甲烷和二氧化碳转化率达到最高值 ,分别为6 4%和 39%。以此法制备的合成气的H2 /CO摩尔比可以在很宽的范围内变化 ,本研究合成气H2 /CO摩尔比的变化范围是 0 .7～ 3 .1。
Under the conditions of low temperature and pressure, the synthesis of hydrocarbons and synthesis gas from methane and carbon dioxide using molecular sieve type A as catalyst in a silent discharge reactor was studied. Simultaneously, hydrocarbon and syngas were synthesized in a silent discharge reactor. The experiment was carried out in the range of raw material gas flow rate of 200 ~ 600ml / min, raw material gas methane and carbon dioxide molar ratio of 1/1 ~ 3/1 and input power of 10 0 ~ 500W. The results show that the low feed gas flow is favorable for the conversion of methane and carbon dioxide, while the high feed gas flow is conducive to the formation of hydrocarbons. The molar ratio of feed gas methane and carbon dioxide has the most significant effect on the molar ratio of H2 / CO to the syngas. Methane and carbon dioxide conversion and syngas and hydrocarbon yields increase with increasing input power. However, when the feed gas flow rate was 200 ml / min, the methane / carbon dioxide molar ratio was 1/1 and the input power was 500 W, the methane and carbon dioxide conversions reached the highest values of 64% And 39%. The H2 / CO molar ratio of the syngas prepared by this method can vary within a wide range. In the present study, the H2 / CO molar ratio of the syngas varied from 0.7 to 3.1.