化工英语在线翻译

Concerning helium flow, the existence of an optimal value implies that diffusive migration and/or deposition of carbon species on nickel catalyst is an important step for crystallizing carbon and the development of mesoporous structure. That is, 46.4mlcm min was too large to promote diffusion and/or a deposition step (Table 2). However, when the flow was in a more favorable range (11.6–23.2mlcm min ), this variable had a limited influence. This was also the case with the heating rate. Strictly speaking, the heating rate varied in a moderate range such that it became much less important than carbonization temperature and nickel loading. Nevertheless, adoption of the rate similar to that used in conventional wood carbonization is importance because it ensures easy and simple operation of the nickel-catalyzed carbonization.
In analyzing the influence of holding time, it is interesting to note that part of the mesopore structure was changed into macropore structure in the period

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