【摘要】 采用液相混合法合成了Zn²⁺与2-甲基咪唑摩尔配比分别为1:2、1:4、1:8、1:16的ZIF-8,采用XRD、SEM、低温N₂吸附-脱附、FT-IR方法对其进行详细表征,并研究ZIF-8吸附脱除模拟燃料中喹啉的性能,考察不同摩尔配比、吸附时间及吸附温度对其吸附喹啉性能的影响。XRD和FT-IR表征结果发现各样品均出现ZIF-8的特征峰;SEM结果表明ZIF-8样品的形貌大多为菱形十二面体,且粒径逐渐减小;低温N₂吸附-脱附结果表明ZIF-8含有的大量的微介孔,其中ZIF-8（1:8）的比表面积和孔径最大。ZIF-8（1:8）吸附脱除喹啉的性能较佳,在303 K,30 min时的吸附效果最佳,氮去除率可达28.27%,此时的吸附容量为155.15 mg（N）/g。热力学研究表明ZIF-8（1:8）吸附喹啉更符合多分子层吸附的Freundlich模型。更多还原

【Abstract】 ZIF-8 with Zn²⁺and 2-methylimidazole molar ratios of 1:2,1:4,1:8 and 1:16 were prepared using the liquid-phase mixing method.XRD,SEM,low-temperature N2 adsorption desorption and FT-IR methods were used to characterize the ZIF-8,and the performance of ZIF-8 in adsorbing and removing quinoline from simulated fuels was studied.The effects of different molar ratios,adsorption time,and adsorption temperature on adsorption performance for quinoline were investigated.The XRD and FT-IR characterization results showed that all four samples exhibited characteristic peaks of ZIF-8;The SEM results show that most of the ZIF-8samples exhibit rhombic dodecahedron,and the particle size of the material gradually decreases;The low-temperature N₂ adsorption desorption curve indicates that all samples contain a large number of mesoporous structures,among which ZIF-8（1:8） has the highest specific surface area and pore size.ZIF-8（1:8） has the best performance in adsorbing and removing quinoline,with the best adsorption effect at 303 K for 30 minutes.The nitrogen removal rate can reach 28.27%and the adsorption capacity 155.15 mg（N）/g.Adsorption thermodynamic studies have shown that the adsorption of quinoline by ZIF-8（1:8） is more in line with the Freundlich model,and the adsorption process belongs to multi molecular layer adsorption.更多还原