溶解度参数法在开发不溶性硫磺新型萃取剂中的应用

通过文献和基团贡献法获得了与普通硫磺溶解度参数接近的一系列溶剂的分子结构和空间结构,并考察了它们对普通硫磺的溶解度。结果表明:仅凭溶剂的溶解度参数不能完全判断溶剂对硫磺溶解性能的影响,基团贡献法不适用于同分异构体溶剂。同类型溶剂的溶解度参数越接近硫磺的溶解度参数,其对硫磺的溶解度就越大。环状类HHS-1、HBS-2溶剂和多卤代芳烃MA有望替代CS2成为不溶性硫磺的新型萃取溶剂。

Application of Solubility Parameter Method in Development of Extractants for Insoluble Sulfur

The molecular structures of a series of solvents with similar solubility parameters to those of normal sulfur were determined with the help of the literatures and group contribution method.Their solubilities for normal sulfur were determined.The results show that the solubility for sulfur cannot be judged solely by its solubility parameters.The group contribution method is unsuitable for the isomers of solvents.For the same type of solvents, the closer their solubility parameters to those of sulfur, the larger are their solubilities for sulfur.HHS-1 and HBS-2 with cyclic structure as well as MA, a polyhalogenated aromatic, are hopeful to replace carbon disulfide as extractant for insoluble sulfur.