Reaction of nitric oxide with metal-loaded carbon in the presence of oxygen

Hiromi Yamashita *, Hajime Yamada, Akira Tomita
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引用次数: 92

Abstract

The effective removal of a low concentration of nitric oxide can be realized by using carbon as a reducing agent. The C-NO reaction was catalyzed by metal loaded on coal-char both in the presence and in the absence of oxygen. This C-NO reaction was remarkably promoted by the presence of oxygen at temperatures as low as 300 °C. The ratio of the activity for NOx, decomposition to that for carbon combustion in the coexistence of nitric oxide and oxygen depended on the kind of metal catalyst. The order of catalytic activity was Cu > Ca > Ni > none for the C-NO reaction, but Ca > Cu > Ni > none for the C-O2 reaction. This result suggests a possible means of finding a suitable metal catalyst which can strongly promote only the C-NO reaction. A high conversion for the C-NO reaction in the presence of oxygen was achieved by copper-loaded brown coal-char.

氧化氮与载金属碳在氧气存在下的反应
用碳作还原剂可以有效地去除低浓度的一氧化氮。在有氧和无氧条件下,煤炭上负载金属催化C-NO反应。在低至300℃的温度下,氧气的存在显著地促进了C- no反应。在一氧化氮与氧气共存的情况下,催化剂的NOx分解活性与碳燃烧活性之比取决于催化剂的种类。催化活性的顺序为Cu >Ca比;倪祝辞C-NO反应没有,但Ca >铜比;倪祝辞C-O2反应没有。这一结果提示了一种寻找只能强烈促进C-NO反应的合适金属催化剂的可能方法。负载铜的褐煤炭在氧存在下实现了C-NO反应的高转化率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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