Partial Oxidation of Methane to Methanol with Oxygen or Air in a Nonequilibrium Discharge Plasma
Partial Oxidation of Methane to Methanol with Oxygen or Air in a Nonequilibrium Discharge Plasma
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DOI：
10.1023/a:1021849503110
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发表时间：
1998-09
影响因子：
3.6
通讯作者：
L. Zhou;B. Xue;U. Kogelschatz;B. Eliasson
中科院分区：
文献类型：
--
作者：
L. Zhou;B. Xue;U. Kogelschatz;B. Eliasson
在介质阻挡放电（DBD）条件下，用氧或空气对甲烷部分氧化制甲醇进行了实验和理论研究。测定了CH4/ o2和CH4/空气混合物的主要参数比电能、氧含量、流量、温度和气体压力。在两种原料气混合物中，氧浓度约为15%时，对甲醇形成的最佳选择性被发现。低比能有利于对甲醇的选择性，抑制了碳氧化物的形成。实验表明，在高甲烷转化率条件下可获得高的甲醇选择性。在CH4/ o2混合物中，甲醇收率最高为3%，甲醇选择性最高约为30%。在CH4/空气混合物中，甲醇收率也高达2%。此外，还检测到其他有用的产物，如乙烯、乙烷、丙烷和乙醇。实验和数值模拟表明，H2O和CO的形成对甲醇的形成有很强的负影响。
The partial oxidation of methane to methanol with oxygen or air was investigated experimentally and theoretically in a dielectric-barrier discharge (DBD). The predominant parameters of specific electric energy, oxygen content, flow rate, temperature, and gas pressure were determined in CH4/O2and CH4/air mixtures. Optimum selectivities toward methanol formation were found at an oxygen concentration of about 15% in both feed gas mixtures. Low specific energy favors the selectivity toward methanol and suppresses the formation of carbon oxides. The experiments indicate that high methanol selectivities can be obtained at high methane conversion. The highest methanol yield of 3% and the highest methanol selectivity of about 30% were achieved in CH4/O2mixtures. In CH4/air mixtures, as high as 2% methanol yield was also obtained. In addition, other useful products, like ethylene, ethane, propane, and ethanol, were detected. Experiment and numerical simulations show that the formation of H2O and CO has a strong negative influence on methanol formation.