Abstract

The interaction of carbon materials (graphite, carbon black, and anthracite) with oxidizing agents (air and carbon dioxide) was considered from the standpoint of topochemical reactions. It was shown that the rate of oxidation reactions depends not only on the process temperature and the nature and flow rate of an oxidizing agent but also on the surface area of the activated sample. An increase in the size of carbon crystallites in the sample led to a reduction in their contact boundaries and a decrease in the rate of the oxidation reaction. It was found that not only the rate of the oxidation reaction but also the number of pores formed depends on active centers localized at the boundaries of crystallites. It was demonstrated that the two-stage oxidation of carbon materials (with air to low degrees of activation and then with carbon dioxide or water vapor) can significantly increase the sorption characteristics of the sample.

中文翻译：

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碳材料的表面积对其氧化时孔形成的影响

摘要

从拓扑化学反应的角度考虑了碳材料（石墨、炭黑和无烟煤）与氧化剂（空气和二氧化碳）的相互作用。结果表明，氧化反应的速率不仅取决于工艺温度和氧化剂的性质和流速，还取决于活化样品的表面积。样品中碳微晶尺寸的增加导致其接触边界的减少和氧化反应速率的降低。发现不仅氧化反应的速率而且形成的孔的数量取决于位于微晶边界处的活性中心。