Abstract:

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.

Key words: [Co(II)Salen] complexes, Steady-pressure and steady-airstream device, Oxygen-carrying device, Innovative design and improvement