| 金属氧化物对CO还原NO反应的催化作用 |
| 摘要点击 867 全文点击 2124 投稿时间：1998-03-14 |
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| 中文关键词 金属氧化物 复合金属氧化物 催化 CO还原NO反应 稳定还原率 |
| 英文关键词 metallic oxide complex metallic oxide catalytic activity reaction of CO reducing NO stable reduction ratio of NO |
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| 中文摘要 |
| 采用固定床流动反应器,研究CuO、Cr2O3、MnO2、Fe2O3、Ni2O3等单元金属氧化物及它们形成的复合氧化物对CO还原NO反应的催化活性。结果表明,在500℃ 800ml/m3 NO-0.2% CO-2.0% CO2-N2气氛中CO还原NO的能力很小,稳定还原率(SRR)仅为1.50%.所有单元金属氧化物及复合氧化物对CO还原NO反应均表现出一定的催化活性,Fe2O3、Ni2O3、Fe-Ni-Ox、Ni-Cu-Ox、Ni-Cu-Mn-Ox等对该反应表现出较高的催化活性,SRR值分别为100.00%,96.10%,100.00%,100.00%和100.00%.初步探讨了金属氧化物对CO还原NO反应的催化机理符合Redox机理。 |
| 英文摘要 |
| The catalytic activities of CuO,Cr2O3,MnO2,Fe2O3 and Ni2O3 and the complex metallic oxides formed by the single oxides on reduction of NO by CO,were studied in a packed bed reactor.The results showed that in the atmosphere of 800ml/m3 NO-0.2% CO-2.0% CO2-N2 with the preheating temperature of 500℃ it was difficult to reduce NO by CO,with the stable reduction ratio (SRR) of NO only 1.5%.All metallic oxides and complex metallic oxides used in the present experiments gave certain catalytic effect on reduction of NO by CO.Fe2O3,Ni2O3,Fe-Ni-Ox,Ni-Cu-Ox and Ni-Cu-Mn-Ox showed high ctalytic activities on reduction of NO by CO,with SRR 100.00%,96.10%,100.00%,100.00% and 100.00% respectively.At the same time,the mechanism of catalytic reaction of CO reducing NO on the surface of metallic oxide was also discussed to comply with Redox mechanism. |
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