乙烯和四氯化亚铜铝甲苯溶液的稳定常数测定

提出了一种以气液平衡为基础,在稀溶液条件下测定络合反应稳定常数的方法——气体溶解度法。乙烯和四氯化亚铜铝甲苯溶液间呈二步络合反应,实测了25—45℃该体系的稳定常数。第一步反应的稳定常数明显大于第二步反应,得到了稳定常数与温度间的关联式,估算了这两个反应的络合热。

Measurement of Stability Constants for Ethylene and Cuprous Aluminum Tetrachloride in Toluene Solutions

Based on gas-liquid equilibria a method for measuring stability constants ofdilute solution is presented.It is called gas solubility method.There is a two-stepcomplex reaction between ethylene and cuprous aluminum tetrachloride in tolu-ene solutions.The stability constants for the given system in the temperaturerange 25—45℃ are determined by the suggested method.The values of stabilityconstants of the first-step reaction are obviously larger than the second-step re-action.The correlations between stability constant and temperature are obtained.The heat of complexation of the given reactions is evaluated.