| 新型复合金属氧化物催化剂用于汽车尾气NOx净化的实验研究 |
| 摘要点击 1037 全文点击 1559 投稿时间：1997-09-08 |
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| 中文关键词 复合金属氧化物 催化剂 NOx的净化 汽车尾气 |
| 英文关键词 complex metallic oxide catalyst purification of NOx automobile exhaust |
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| 中文摘要 |
| 采用固定床反应装置,模拟汽车尾气,研究新型复合金属氧化催化剂WCX-I(Re-Ni-Co-Cu-Ox/Fe2O3)对CO还原NO反应和CH4还原NO反应的催化活性,催化剂的抗SO2中毒性能,抗积炭性能。结果表明WCX-I催化剂对NO/CO和NO/CH4反应均具有较好的高温活性。在本研究实验条件下,400℃以上时CO对NO的稳定还原率在93%以上,600℃以上时CH4对NO的稳定还原率在92%以上。在1000ml/m3SO2-N2的高硫气氛中强制中毒及在1.0%CO-10%CO2-N2的缺氧气氛中强制积炭若干小时后的催化剂试样对NO/CO反应的催化活性几乎未见降低. |
| 英文摘要 |
| Simulating the compositions of automobile exhaust,some studies on a new type of complex metallic oxide catalyst WCX-I(Re-Ni-Co-Cu-Ox/Fe2O3)have been conducted in a fixed bed reactor by the authors.These studies include catalytic activity of the catalyst on NO/CO and NO/CH4 reactions,resistance to SO2 poisoning and carbon deposition.The experimental results showed that the catalyst not only gives better catalytic activity on NO/CO reaction and NO/CH4 reaction at higher temperatures,e.g.higher than 93% stable reduction ratio (SRR)was achieved when temperature higher than 400℃ for NO/CO reaction,and higher than 92% SRR was achieved when temperature higher than 600℃ for NO/CH4 reaction.Also the catalyst shows better resistance to SO2 poisoning and carbon deposition.After several hours compulsory SO2 poisoning and carbon deposition in the atmosphere of 1000ml/m3 SO2-N2 and 1.0% CO 10% CO2-N2,the catalyst still shows much high catalytic activities. |
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