The activity of catalyst was higher when the direct reduction method was used than the calcination-reduction method. The optimized preparation conditions of catalysts are as follows: calcination temperature 450℃~500℃,reduction temperature 400℃,reduction time 6 hours.
结果表明:氧化镍最佳负载量为25%～30%之间;以硝酸镍为前驱体的镍基催化剂苯加氢活性最高;催化剂采取直接还原活化的方式具有更高的苯加氢活性;焙烧温度450～500℃,还原温度400℃,还原时间6小时催化剂的苯加氢活性最高。
参考来源 - 镍基催化剂的苯加氢性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This process is often called a direct reduction.
我们时常把这个过程称之为直接归纳。
The laboratory test of grate - klin direct reduction process was conducted.
在实验室进行了链篦机-回转窑直接还原的试验研究。
One key factor of direct reduction of cold bond pellets is the choice of shaped binder.
冷固结球团直接还原工艺成功的关键因素之一是成型粘结剂的选用。
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