Electrochemical removal of NO and CH4 in the presence of excess O2, H2O and CO2 using Sm2O3-doped CeO2 as a solid electrolyte
Electrochemical removal of NO and CH4 in the presence of excess O2, H2O and CO2 using Sm2O3-doped CeO2 as a solid electrolyte
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使用 Sm2O3 掺杂的 CeO2 作为固体电解质在过量 O2、H2O 和 CO2 存在下电化学去除 NO 和 CH4
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
M. Mizuno
中科院分区：
文献类型：
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作者：
T. Hibino;K. Ushiki;Y. Kuwahara;M. Mizuno
在400 ~ 800 °C温度范围内，采用单室反应器对含有过量O2、H2O和CO2的气体进行了NO和CH 4的电化学脱除，该反应器由CeO 2基固体电解质和两个钯电极构成。在研究的所有温度下，通过向反应器施加直流电来分解NO和CH 4。NO以两种不同的方式分解为N2，这取决于所施加的电流。在低电流下，NO与O2一起在钯阴极电解;并且，在高电流下，NO在不含吸附氧的钯表面上催化还原。通过考察反应气体中NO、H_2O、CO_2、CH_4、C_3H_8等气体浓度对这两种分解反应的影响，详细讨论了它们的反应机理。
Electrochemical removal of NO and CH4 from a gas stream containing excess O2, H2O and CO2 has been carried out between 400 and 800 °C using a single-compartment reactor, which is constructed from CeO2-based solid electrolyte with two palladium electrodes. At all temperatures studied, both NO and CH4 were decomposed by applying a direct current to the reactor. NO was decomposed to N2 in two different ways depending on the applied current. At low currents, NO was electrolysed together with O2 at the palladium cathode; and, at high currents, NO was catalytically reduced over the palladium surface free from adsorbed oxygen. By investigating the influences of the concentration of NO, H2O, CO2, CH4 or C3H8 contained in the reactant gas to these two decompositions, their mechanisms are discussed in detail.