activity of the catalyst 催化剂的活性
Pre-reduction can deactivate the activity of catalyst.
预还原则降低了催化剂的活性；
The time of sulfurization is shorter, the temperature of bed layer is stable, and the activity of catalyst is high, while it is used for the sulfurization of Co-Mo catalysts.
进行钴—钼系催化剂硫化，具有硫化时间短，床层温度平稳等特点，且催化剂可获更高活性。
The experimental results showed high catalytic activity of the catalyst, mild reaction conditions, and convenient in application.
实验结果表明该催化剂活性高，反应条件温和，方法简便。
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