Direct decomposition of nitrous oxide in the presence of oxygen over iridium catalyst supported on alumina
Direct decomposition of nitrous oxide in the presence of oxygen over iridium catalyst supported on alumina
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DOI：
10.1016/j.ces.2007.08.011
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发表时间：
2008-10
影响因子：
4.7
通讯作者：
C. Ohnishi;S. Iwamoto;M. Inoue
中科院分区：
文献类型：
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作者：
C. Ohnishi;S. Iwamoto;M. Inoue
研究了氧化亚氮(N2O)在氧化铝负载的贵金属催化剂上在氧气存在下的直接分解。以氧化铝为载体的Ir催化剂表现出比其他贵金属催化剂更高的催化活性。尽管催化剂活性受低温下N2O分解生成的氧的影响，但在-350∘C时氧迅速脱附，反应温度从350∘C升高到400℃后，催化剂活性恢复。因此，Ir/Al_2O_3催化剂可以在相对较高的温度下进行有氧条件下的N2O分解。
Direct decomposition of nitrous oxide (N2O) on noble metal catalysts supported on alumina was examined in the presence of oxygen. The iridium catalysts supported on alumina showed higher activities than the other noble metal catalysts. Although the catalyst activity was affected by oxygen formed by N2O decomposition at lower temperatures, desorption of oxygen proceeded promptly at the temperature >350∘C, and the catalytic activity was recovered by increasing the reaction temperature from 350 to 400∘C. Therefore, the Ir/Al2O3catalyst can be used for N2O decomposition in the presence of oxygen at relatively higher temperatures.