以1-甲基咪唑与1-溴辛烷为主要原料,采用微波法合成1-辛基-3-甲基咪唑溴盐,再以其为中间体,进行离子交换得到1-辛基-3-甲基咪唑四氟硼酸盐离子液体。将产物进行提纯处理后,研究其对钒的萃取性能。并取样对其进行红外光谱、表面张力测试等一系列性质及结构检测。结果表明:甲基咪唑与溴辛烷及NaBF_4合成的离子液体对钒的萃取效果良好,萃取率达到80%。 Using 1-methylimidazole and 1-bromooctane as the main raw materials, 1-octyl-3-methylimidazolium bromide salt was synthesized by microwave method, and then was used as an intermediate for ion exchange to obtain 1-octyl-3 - methyl imidazole tetrafluoroborate ionic liquid. After the product was purified, the vanadium extraction performance was studied. And sampling the infrared spectrum, surface tension test and a series of properties and structure testing. The results showed that the extraction of vanadium by methylimidazole, bromooctane and NaBF_4 was very good with the extraction rate of 80%.