The influences of preparation methods on catalyst activity were examined.
考察了制备方法对催化剂活性的影响。
The catalyst activity somewhat decreased and the stability of the catalyst was improved obviously.
催化剂的活性有所降低，稳定性显著增强。
The catalyst activity and stability are increased, and in the same time the catalyst cost is reduced.
提高催化剂活性和稳定性，同时降低催化剂成本。
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