The removal of 4,6‐dimethyldibenzothiophene is quite challenging in petroleum refining process. Adsorptive desulfurization is an efficient technique but the capacities and/or poor stability of current adsorbents need to be improved. Here, the fabrication of hierarchical N‐doped carbons (NCs) derived from carbonizing the polymerization of 2,4,6‐tris(chloromethyl)mesitylene and p‐phenylenediamine is reported. The results show that the NCs have developed micropores (0.34–0.93 cm³ g⁻¹) and mesopores (0.15–0.47 cm³ g⁻¹), and their surfaces have abundant pyrrole‐like/graphitic N and topological defects and vacancies, and high cycle stability (6 cycles). The typical adsorbent NC‐700 shows a record‐high capacity of 2.91 mmol g⁻¹ under ambient conditions. The computational results show that the doped N is capable of promoting adsorptive strength by 0.055–0.178 eV. In conclusion, the obtained materials exhibit excellent performance for deep desulfurization, and this work may open up new avenues for the development of efficient adsorbents. © 2018 American Institute of Chemical Engineers AIChE J, 64: 3786–3793, 2018

中文翻译：

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设计的富含N的聚合物的分层N掺杂碳：具有创纪录的高脱硫能力的吸附剂

在石油精炼过程中，去除4,6-二甲基二苯并噻吩非常具有挑战性。吸附脱硫是一种有效的技术，但是当前吸附剂的容量和/或较差的稳定性需要提高。在此，据报道，通过碳化2,4,6-三（氯甲基）1，3，5-三苯甲基和对苯二胺的聚合反应，得到了分层的N掺杂碳（NC）。结果表明，NCs形成了微孔（0.34-0.93 cm ³ g ^-1）和中孔（0.15-0.47 cm ³ g ^-1）），并且它们的表面具有大量的吡咯状/石墨态N和拓扑缺陷和空位，并且具有很高的循环稳定性（6个循环）。典型的NC-700吸附剂在环境条件下显示出2.91 mmol g ^-1的高记录容量。计算结果表明，掺杂的N能够提高吸附强度0.055-0.178 eV。总之，所获得的材料在深度脱硫方面表现出优异的性能，这项工作可能为开发高效吸附剂开辟新的途径。©2018美国化学工程师学会AIChE J，64：3786–3793，2018