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| 随着Au负载量的增加，NO氧化率逐渐增加，但当Au的负载量大于1.0%，NO氧化率又呈下降趋势。这是由于当Au的负载量低于1.0%时，随着Au负载量的增加，催化剂上Au的粒子数目增多，活性中心增加，增加了其对NO氧化的催化活性，但当Au负载量超过1.0%时，Au粒子逐渐发生聚集，粒径增加，催化活性逐渐降低。 |
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ypfkb(金币+1,VIP+0): 9-28 10:21
ypfkb(金币+1,VIP+0): 9-28 10:21
| With the increase of amount of analysing, oxidation rate increase gradually, but when the Au capacity than 1.0%, oxidation rate and decreasing. This is because when analysing capacity under the Au 1.0% load increases, the number of particles on the Au catalysts, increased activity center, increased to NO oxidation catalytic activity, but when the Au load exceed, Au particles 1.0%, particle size increase gradually occurs, the catalytic activity gradually reduced. |
3楼2009-09-12 09:15:05
jw227
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ypfkb(金币+1,VIP+0): 9-5 17:08
ypfkb(金币+1,VIP+0): 9-28 10:21
ypfkb(金币+1,VIP+0): 9-5 17:08
ypfkb(金币+1,VIP+0): 9-28 10:21
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With the increase catalyst loading of Au , the rate of NO oxidation gradually enhance. Meanwhile, when the loading of Au is greater than of 1.0%, the rate of NO oxidation decline. The reason is Au particles, active sites and catalytic activity for NO oxidation on the Au increase with the increase of Au loading, when loading of Au is less than 1.0%. But when the loading of Au more than 1.0%, Au particles aggregation occurs gradually. This causes the particle size increases and the catalytic activity gradually decreases. [ Last edited by jw227 on 2009-9-5 at 17:48 ] |
2楼2009-09-05 17:05:19
