摘要：

以合成的聚苯胺为前驱体，分别采用NaCl、KCl、MgCl₂、CaCl₂为造孔剂，在950℃进行高温炭化得到富含氮多孔碳材料，并将其用于催化过硫酸盐氧化处理酸性红73废水。实验结果表明，富含氮多孔碳材料是一种以大孔介孔为主的多孔碳材料，随着造孔剂阳离子半径的增大，体现出更好的造孔性能和催化氧化活性。因此，以CaCl₂为造孔剂时，比表面积最大可达124.9 m²/g，在25℃，该催化剂投加量为0.4 g/L，过硫酸钠（PS）投加量为0.5 g/L时，酸性红73的去除率最高可达98.4%。

关键词: 富含氮多孔碳, 催化过硫酸盐氧化, 酸性红73, 聚苯胺

Abstract:

Based on polyaniline as precursor and NaCl, KCl, MgCl₂ and CaCl₂ as pore-forming agents respectively, nitrogen-rich porous carbons were prepared by high temperature carbonization at 950℃, and then it was used to catalyze persulfate oxidation to treat acid red 73 wastewater. Results suggested that nitrogen-rich porous carbons were a kind of porous carbon mainly composed of macropores and mesoporous. Additionally, nitrogen-rich porous carbon showed better pore-forming performance and catalytic oxidation activity with the increase of cation radius of pore-forming agent. Therefore, the nitrogen-rich porous carbon based on CaCl₂ as pore-forming agent had maximum specific surface area with 124.9 m²/g and then showed highest acid red 73 removal, which can reach 98.4% under 25℃, 0.4 g/L of catalyst dosage and 0.5 g/L of PS dosage.

Key words: nitrogen-rich porous carbon, catalytic persulfate oxidation, acid red 73, polyaniline

中图分类号: 

• X703.1