An efficient and easy template-free method for the preparation of hierarchical porous carbons (HPCs) has been developed using low-priced coal tar pitch (CP) as the starting material. Application of the diketone (-COCO-) radical provides a carbonyl methylene group for polycyclic aromatic hydrocarbons by condensation and produces an effective micro-mesoporous network with a high specific surface area. With the help of controlled Friedel-Crafts reaction and oxidation, carboxyl-functionalized CP is obtained as the stratified porous CP precursor, and the high-temperature decarboxylation (>230°C) helped in generating well-developed micro-mesoporous carbon. The total pore volume of porous carbon of 1277.3 and 1.45 cm³g^-1 the maximum BET surface area suggests that the rapid electrolyte ion exchange and charge transportability would be better for the electrochemical capacitor.

中文翻译：

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无模板的分层介孔碳合成：基于具有羧基化和二酮结构的功能性煤焦油沥青

已经开发了一种以廉价的煤焦油沥青（CP）为起始原料的高效，简便，无需模板的制备分级多孔碳（HPC）的方法。二酮（-COCO-）自由基的施加通过缩合为多环芳烃提供了羰基亚甲基，并产生了具有高比表面积的有效的微介孔网络。借助受控的Friedel-Crafts反应和氧化，获得了羧基官能化CP作为分层多孔CP前驱体，并且高温脱羧（> 230°C）有助于生成发达的微介孔碳。多孔碳的总孔体积为1277.3和1.45 cm ³ g ^-1 最大的BET表面积表明快速的电解质离子交换和电荷传输能力对于电化学电容器将是更好的。