Purification method of pyridine

The invention discloses a purification method of pyridine. The method comprises the following steps: preparing a pyridine complex from crude pyridine, and dissociating and distilling the pyridine complex; wherein the pyridine complex is a complex generated by pyridine and AgSbF6 or CuSiF6, and the dissociation distillation of the pyridine complex is carried out in the ionic liquid N-butyl pyridine tetrafluoroborate or N-octyl pyridine bromide. In the purification process, conventional operations such as crystallization, filtration and distillation at lower temperature are utilized, and a device is simple and high in efficiency; the high-purity pyridine can be obtained by distillation at 115-130 DEG C in the purification process, the temperature is relatively low, the energy consumption is low, and the cost is low; the yield of the high-purity pyridine obtained through purification is 92.3%-95.1%, and the purity of the high-purity pyridine is 99.91%-99.96%. 一种吡啶的纯化方法，包括粗吡啶制备吡啶配合物，吡啶配合物解离蒸馏；其中吡啶配合物是吡啶与AgSbF6或Cu