| In this dissertation has discussed the influence on activities of several conditions when using two different kinds of method co-precipitation and the improved co-precipitation.With the co-precipitation, using cross experiment, constitute of catalyst (include 2 equations), proportionment of precipitator, aged time, calcine temperature, had been discussed-how to influence the activity of catalyst. The activity will be primed if prepareing the catalyst with CuO:ZnO:CeO2=6:9:10, using NaOH as precipitator, aged time 3h, calcining the calatyst at 450℃. And then at 130℃could get CO conversion 99%.Sulfate and chlorate are used to prepare the catalyst with co-precipitation could make the sulfur and chlorine as the hangovers of catalyst. For hangover existed in, the catalyst is impure, effect on depressing the activity remarkably. But when using improved co-precipitation there isn't hangover at all, the activity is renewed again. It could improve the CO conversion from less than 5% to 99%(using chlorate) and 50%(using sulfate) at 200℃.If using improved co-precipitation to prepare the Cu-Zn-0 catalysts could improve the activity with the temperature failed 30℃when CO conversion getting 99%. In the Cu-Zn-Ce-0 catalysts cerium be added in, so it is becoming more complex than Cu-Zn-O. In this system temperature could fall 20-40℃when CO conversion getting 99%. The result is that, the catalytic performance would be reduced when the vapor included in the testing gas, but there are practicality all the same.
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