[Co(Ⅱ)Salen]配合物的制备及载氧实验装置的改进

Improvement of the Device for the Preparation of[Co(Ⅱ)Salen]Complexes and Oxygen-Carrying Experiment

[Co(Ⅱ)Salen]配合物的制备及载氧实验,以其较强的综合性而被多所高校列为综合化学实验教学项目。鉴于现有实验装置存在的不足,进行了创新设计与改进:设计、组装了气体稳压稳流装置,使气体可以稳定分配,实现了多组实验同时独立开展,学生实验成功率显著提升;设计、组装了新的载氧装置,采用了三通阀与二通阀并联的方法,实现了对U型管的氧气吹扫,排除了原装置中残留空气的影响,能够更科学准确地测量吸氧体积;同时,载氧装置全部固定在面板上,关键构件全部采用钢制结构,显著提升了仪器的气密性和使用寿命。

The preparation of[Co(Ⅱ)Salen]complexes and oxygen-carrying experiments are listed as a comprehensive chemistry experiment by many universities.Owing to the drawbacks of the existing experimental equipment,innovative designs and improvements were made as discussed in this paper.The designed device ensured the gas was distributed stably using a steady-pressure and steady-airstream,allowed multi-group experiments to be carried out simultaneously and independently,and improved the success rate of the experiment considerably.A new oxygen-carrying device,in which three-way and two-way valves were installed in parallel,was designed and assembled.The residual air was discharged from the U-shaped tube through oxygen blowing so that the volume of oxygen absorption could be measured more scientifically and accurately.Simultaneously,the oxygen-carrying device was fixed on a steel plate,and the key components were all made of the steel,which significantly improved the air tightness and service life of the instrument.