A nitrogen-doped carbon material with developed porous structure was prepared by the simple single-step pyrolysis of sodium alginate and 1, 6-hexanediamine. Nitrogen-doped carbon catalysts were optimized and characterized, and their catalytic activities were investigated using the self-oxidative coupling of amine as model reaction. N₂ adsorption-desorption exhibited that the introduction of 1, 6-hexanediamine could observably increase the specific surface area and pore volume of the carbon material. X-ray photoelectron spectroscopy confirmed N was incorporated successfully into the carbon. Benefiting from these, nitrogen-doped carbon material exhibited high catalytic performance for the oxidation of amines to imines under solvent-free, air atmospheric conditions. And the nitrogen-doped carbon possessed good reusability and applicability. Meanwhile, the nitrogen-doped carbon material was available, low cost and environment-friendly owing to the use of cheap, renewable natural starting materials and simple synthetic procedure.

通过藻酸钠和1，6-己二胺的简单一步热解制备了具有发达多孔结构的氮掺杂碳材料。对氮掺杂碳催化剂进行了优化和表征，并以胺的自氧化偶合为模型反应研究了其催化活性。N ₂吸附-脱附表明，引入1，6-己二胺可明显增加碳材料的比表面积和孔体积。X射线光电子能谱证实，N已成功地掺入碳中。受益于这些，氮掺杂的碳材料在无溶剂的大气条件下表现出高的催化性能，可将胺氧化为亚胺。氮掺杂碳具有良好的可重复使用性和适用性。同时，由于使用廉价，可再生的天然起始原料和简单的合成方法，因此可获得氮掺杂的碳材料，其成本低廉且环境友好。