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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Selective Oxidation of Methane to Methanol and Formaldehyde with Nitrous Oxide in a Dielectric-Barrier Discharge-Plasma Reactor
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Selective Oxidation of Methane to Methanol and Formaldehyde with Nitrous Oxide in a Dielectric-Barrier Discharge-Plasma Reactor

机译：介质阻挡放电-等离子体反应器中的一氧化二氮将甲烷选择性氧化为甲醇和甲醛

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摘要

The partial oxidation of CH_4 with N_2O in Ar has been investigated at atmospheric pressure in a dielectric-barrier (silent) discharge plasma induced by low input power in a range from 0.27 to 7.71 Wh(Ncm~3)~(-1). In an Ar stream, about 10% of the combined yield of CH_3OH and HCHO and 40% of the selectivity to these roducts were achieved,with CO being the other major product. Low power favored selectivities to unstable partial oxidized products and supressed further decomposition to carbon oxides and carbonaceous deposits on the electrode surface.Kinetic and spectroscopic observations inducatede that Ar carraiers gas played an important role in the highly selective oxidation of CH_4 to CH_3OH and HCHO via energy transfer from excited-state Ar species to the reactant molecules under the mild conditions examined.
机译：在大气压下，在0.27至7.71 Wh（Ncm〜3）〜（-1）的低输入功率引起的介质阻挡（无声）放电等离子体中，研究了Ar中N_2O对CH_4的部分氧化。在Ar流中，CH_3OH和HCHO的总收率约为10％，对这些产物的选择性达到40％，而CO是另一种主要产物。低功率有利于不稳定的部分氧化产物的选择性，并阻止了进一步分解为电极表面上的碳氧化物和碳质沉积物。动力学和光谱学观察表明，Ar螯合剂气体在通过能量将CH_4选择性氧化为CH_3OH和HCHO方面起着重要作用。在所研究的温和条件下从激发态Ar物种转移到反应物分子上。

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