To elucidate the importance of various reaction steps in the oxidative convers ion of methane, experiments were carried out with three reaction products: ethane, ethylene and carbon monoxide. These products were studied seperately, in oxidation experiments with and without a catalyst. Moreover , the effect of admixing them to a methane/oxygen feed was investigated. All experiments were carried out in a micro flow tubular quartz reactor, which was empty or filled with catalyst. The temperature was 800 C. The ethane and ethylene experiments have learnt that: - ethane to ethylene convers ion is much more rapid than ethane combustion, irrespective of the presence of a catalyst. The main path of combustion leads via ethylene -ethane is converted much more rapid than methane. This imposes serious constraints to maximum attainable yields. - The principal combustion product in absence of a catalyst is CO. With a catalyst C02 is dominating. This agrees well with the rapid catalytic oxidation observed with CO/02 feeds. The conclusions can be summarized in a simplified overall reaction scheme.
|Title of host publication||Hydrocarbons : source of energy : proceedings of the 1st seminar on the results of the sub-programme "Optimization of the production and utilization of hydrocarbons", held in Lyon, France, 21-23 September, 1988|
|Editors||G. Imarisio, M. Frias, J.M. Berntgen|
|Place of Publication||London|
|Publisher||Graham and Trotman|
|Publication status||Published - 1988|