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lixiaod001

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ypfkb(½ð±Ò+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.
3Â¥2009-09-12 09:15:05
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jw227

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ypfkb(½ð±Ò+1,VIP+0): 9-5 17:08
ypfkb(½ð±Ò+1,VIP+0): 9-28 10:21
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 ]
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